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Past papers
JEE Main 2002
Annual, Paper 1
Physics
65
Chemistry
62
Mathematics
70
Physics
Q5862
The power factor of AC circuit having resistance (R) and inductance (L) connected in series and an angular velocity ω is
Electromagnetic Induction and Alternating Currents
Q5935
In a transformer, number of turns in the primary coil are 140 and that in the secondary coil are 280. If current in primary coil is 4A, then that in the…
Electromagnetic Induction and Alternating Currents
Q5964
If 13.6 eV energy is required to ionize the hydrogen atom, then the energy required to remove an electron from n=2 is
Atoms and Nuclei
Q6068
If N₀ is the original mass of the substance of half-life period t 1/2 = 5 years, then the amount of substance left after 15 years is
Atoms and Nuclei
Q6069
At a specific instant emission of radioactive compound is deflected in a magnetic field. The compound can emit (i) electrons (ii) protons (iii) H e²⁺ (iv)…
Atoms and Nuclei
Q6139
Capacitance (in F) of a spherical conductor with radius 1 m is
Electrostatics
Q6173
If there are n capacitors in parallel connected to V volt source, then the energy stored is equal to
Electrostatics
Q6257
Two identical particles move towards each other with velocity 2v and v respectively. The velocity of center of mass is
Rotational Motion
Q6260
The minimum velocity (in m s⁻¹) with which a car driver must traverse a flat curve of radius 150 m and coefficient of friction 0.6 to avoid skidding is
Kinematics
Q6390
The mass of product liberated on anode in an electrochemical cell depends on (where t is the time period for which the current is passed).
Current Electricity
Q6406
If θ ₁, is the inversion temperature, θ n is the neutral temperature, θ c is the temperature of the cold junction, then
Current Electricity
Q6407
A wire when connected to 220 V mains supply has power dissipation P₁. Now the wire is cut into two equal pieces which are connected in parallel to the same…
Current Electricity
Q6446
If an ammeter is to be used in place of a voltmeter, then we must connect with the ammeter a
Current Electricity
Q6532
Formation of covalent bonds in compounds exhibits
Dual Nature of Matter and Radiation
Q6612
Sodium and copper have work functions 2.3 eV and 4.5 eV respectively. Then the ratio of the wavelengths is nearest to
Dual Nature of Matter and Radiation
Q6728
Electromagnetic waves are transverse in nature is evident by
Electromagnetic Waves
Q6831
Which of the following are not electromagnetic waves?
Electromagnetic Waves
Q6849
At absolute zero, Si acts as
Electronic Devices
Q6850
By increasing the temperature, the specific resistance of a conductor and a semiconductor
Electronic Devices
Q6851
The energy band gap is maximum in
Electronic Devices
Q6890
The part of a transistor which is most heavily doped to produce large number of majority carriers is
Electronic Devices
Q6914
If a charge q is placed at the center of the line joining two equal charges Q such that the system is in equilibrium then the value of q is
Electrostatics
Q6990
On moving a charge of 20 coulomb by 2 cm, 2 J of work is done, then the potential differences between the points is
Electrostatics
Q7059
Wavelength of light used in an optical instrument are λ ₁ = 4000 A° and λ ₂ = 5000 A°, then ratio of their respective resolving powers (corresponding to λ ₁…
Optics
Q7060
An astronomical telescope has a large aperture to
Optics
Q7074
If two mirrors are kept at 60° to each other, then the number of images formed by them is
Optics
Q7090
Which of the following is used in optical fibres?
Optics
Q7174
The escape velocity of a body depends upon mass as
Gravitation
Q7175
The kinetic energy needed to project a body of mass m from the earth surface (radius R) to infinity is
Gravitation
Q7225
Energy required to move a body of mass m from an orbit of radius 2R to 3R is
Gravitation
Q7244
If suddenly the gravitational force of attraction between Earth and a satellite revolving around it becomes zero, then the satellite will
Gravitation
Q7333
Which of the following is more close to a black body?
Properties of Solids and Liquids
Q7334
If mass-energy equivalence is taken into account, when water is cooled to form ice, the mass of water should
Properties of Solids and Liquids
Q7335
Two spheres of the same material have radii 1 m and 4 m and temperatures 4000 K and 2000 K respectively. The ratio of the energy radiated per second by the…
Thermodynamics
Q7336
Infrared radiation is detected by
Thermodynamics
Q7349
At what temperature is the r.m.s velocity of a hydrogen molecule equal to that of an oxygen molecule at 47° C?
Kinetic Theory of Gases
Q7350
Cooking gas containers are kept in a lorry moving with uniform speed. The temperature of the gas molecules inside will
Kinetic Theory of Gases
Q7351
1 mole of a gas with γ = 7/5 is mixed with 1 mole of a gas with γ = 5/3, then the value of γ for the resulting mixture is
Thermodynamics
Q7441
Heat given to a body which raises its temperature by 1° C is
Thermodynamics
Q7539
When forces F₁, F₂, F₃ are acting on a particle of mass m such that F₂ and F₃ are mutually perpendicular, then the particle remains stationary. If the force…
Laws of Motion
Q7565
A light string passing over a smooth light pulley connects two blocks of masses m₁ and m₂ (vertically). If the acceleration of the system is g/8, then the…
Laws of Motion
Q7572
A lift is moving down with acceleration a. A man in the lift drops a ball inside the lift. The acceleration of the ball as observed by the man in the lift and…
Laws of Motion
Q7573
Two forces are such that the sum of their magnitudes is 18 N and their resultant is 12 N which is perpendicular to the smaller force. Then the magnitudes of…
Laws of Motion
Q7664
If in a circular coil A of radius R, current I is flowing and in another coil B of radius 2R a current 2I is flowing, then the ratio of the magnetic fields B…
Magnetic Effects of Current and Magnetism
Q7665
If a current is passed through a spring then the spring will
Magnetic Effects of Current and Magnetism
Q7731
The time period of a charged particle undergoing a circular motion in a uniform magnetic field is independent of its
Magnetic Effects of Current and Magnetism
Q7732
If an electron and a proton having same momentum enter perpendicular to a magnetic field, then
Magnetic Effects of Current and Magnetism
Q7838
Speeds of two identical cars are u and 4 u at the specific instant. The ratio of the respective distances in which the two cars are stopped from that instant…
Kinematics
Q7854
From a building two balls A and B are thrown such that A is thrown upwards and B downwards (both vertically with the same speed). If v A and v B are their…
Kinematics
Q7890
A cylinder of height 20 m is completely filled with water. The velocity of efflux of water (in m s⁻¹) through a small hole on the side wall of the cylinder…
Properties of Solids and Liquids
Q8038
Initial angular velocity of a circular disc of mass M is ω ₁. Then two small spheres of mass m are attached gently to diametrically opposite points on the…
Rotational Motion
Q8063
A solid sphere, a hollow sphere and a ring are released from top of an inclined plane (frictionless) so that they slide down the plane. Then maximum…
Rotational Motion
Q8077
Moment of inertia of a circular wire of mass M and radius R about its diameter is
Rotational Motion
Q8124
If a spring has time period T, and is cut into n equal parts, then the time period of each part will be
Oscillations and Waves
Q8125
In a simple harmonic oscillator, at the mean position
Oscillations and Waves
Q8178
A child swinging on a swing in sitting position, stands up, then the time period of the swing will
Oscillations and Waves
Q8214
Identify the pair whose dimensions are equal
Units and Measurements
Q8472
Tube A has bolt ends open while tube B has one end closed, otherwise they are identical. The ratio of fundamental frequency of tube A and B is
Oscillations and Waves
Q8473
length of a string tied to two rigid supports is 40 cm. Maximum length (wavelength in cm) of a stationary wave produced on it is
Oscillations and Waves
Q8474
When temperature increases, the frequency of a tuning fork
Oscillations and Waves
Q8536
A wave y=a sin (ω t - kx) on a string meets with another wave producing a node at x=0. Then the equation of the unknown wave is
Oscillations and Waves
Q8537
A tuning fork arrangement (pair) produces 4 beats/sec with one fork of frequency 288 cps. A little wax is placed on the unknown fork and it then produces 2…
Oscillations and Waves
Q8557
A ball whose kinetic energy E, is projected at an angle of 45° to the horizontal. The kinetic energy of the ball at the highest point of its height will be
Work, Energy and Power
Q8558
If a body looses half of its velocity on penetrating 3 cm in a wooden block, then how much will it penetrate more before coming to rest?
Work, Energy and Power
Q8613
A spring of force constant 800 N/m has an extension of 5 cm. The work done in extending it from 5 cm to 15 cm is
Work, Energy and Power
Chemistry
Q79
Arrangement of (CH₃)₃C-, (CH₃)₂CH-, CH₃-CH₂- when attached to benzyl or an unsaturated group in increasing order of inductive effect is
Some Basic Principles of Organic Chemistry
Q91
A similarity between optical and geometrical isomerism is that
Some Basic Principles of Organic Chemistry
Q92
Racemic mixture is formed by mixing two
Some Basic Principles of Organic Chemistry
Q93
Which of the following does not show geometrical isomerism?
Some Basic Principles of Organic Chemistry
Q188
The functional group, which is found in amino acid is
Biomolecules
Q223
RNA is different from DNA because RNA contains
Biomolecules
Q259
Which of the following statements is true?
Chemical Bonding and Molecular Structure
Q274
Hybridisation of underline atom changes in
Chemical Bonding and Molecular Structure
Q275
A square planar complex is formed by hybridisation of which atomic orbitals ?
Chemical Bonding and Molecular Structure
Q276
In which of the following species the interatomic bond angle is 109^(o)28' ?
Chemical Bonding and Molecular Structure
Q346
Which of the following are arranged in an increasing order of their bond strengths?
Chemical Bonding and Molecular Structure
Q390
For the reaction CO (g) + (1/2) O₂ (g) CO₂ (g), K p /K c is:
Equilibrium
Q430
Change in volume of the system does not alter which of the following equilibria?
Equilibrium
Q457
If half-life of a substance is 5 yrs, then the total amount of substance left after 15 years, when initial amount is 64 grams is
Chemical Kinetics
Q458
The integrated rate equation is Rt = log C₀ - log C t. The straight line graph is obtained by plotting
Chemical Kinetics
Q459
Units of rate constant of first and zero order reactions in terms of molarity M unit are respectively
Chemical Kinetics
Q479
β - particle is emitted in radioactivity by
Nuclear Chemistry (historical)
Q490
For the reaction A + 2B → C, rate is given by R = [A] [B]² then the order of the reaction is
Chemical Kinetics
Q503
The differential rate law for the reaction H₂ + I₂ → 2HI is
Chemical Kinetics
Q556
CH₃ - Mg - Br is an organometallic compound due to:
Coordination Compounds
Q603
The most stable ion is:
Coordination Compounds
Q666
The type isomerism present in nitropentammine chromium (I I I) chloride is:
Coordination Compounds
Q753
How do we differentiate between Fe³⁺ and Cr³⁺ in group III?
d- and f-Block Elements
Q797
Most common oxidation states of Ce (cerium) are:
d- and f-Block Elements
Q841
Which of the following ions has the maximum magnetic moment?
d- and f-Block Elements
Q923
Conductivity (Seimen’s S) is directly proportional to area of the vessel and the concentration of the solution in it and is inversely proportional to the…
Redox Reactions and Electrochemistry
Q958
For the following cell with hydrogen electrodes at two different pressure p₁ and p₂. What will be the emf for the given cell: Pt(H₂)|H⁺ (aq)|Pt(H₂) p₁ 1M p₂
Redox Reactions and Electrochemistry
Q959
EMF of a cell in terms of reduction potential of its left and right electrodes is:
Redox Reactions and Electrochemistry
Q960
Which of the following reaction is possible at anode?
Redox Reactions and Electrochemistry
Q961
When the sample of copper with zinc impurity is to be purified by electrolysis, the appropriate electrodes are:
Redox Reactions and Electrochemistry
Q1108
Value of gas constant R is
Gaseous State
Q1109
For an ideal gas, number of moles per litre in terms of its pressure P, gas constant R and temperature T is
Gaseous State
Q1116
Kinetic theory of gases proves
Gaseous State
Q1133
The reaction: (CH)₃C - Br H₂O (CH)₃C - OH
Organic Compounds Containing Halogens
Q1185
Which of these will not react with acetylene ?
Hydrocarbons
Q1186
Acetylene does not react with:
Hydrocarbons
Q1276
Species acting as both Bronsted acid and base is:
Equilibrium
Q1289
1 M NaCL and 1 M HCL are present in an aqueous solution. The solution is
Equilibrium
Q1324
Let the solubility of an aqueous solution of Mg(OH)₂ be x then its K s p is:
Equilibrium
Q1375
Aluminium is extracted by the electrolysis of
Isolation of Elements
Q1376
The metal extracted by leaching with a cyanide is
Isolation of Elements
Q1525
Oxidation number of Cl in CaOCl₂ (bleaching powder) is:
p-Block Elements
Q1543
The correct order of ionic radius is
Classification of Elements and Periodicity in Properties
Q1544
C e⁺³, L a⁺³, P m⁺³ and Y b⁺³ have ionic radial in the increasing order as
Classification of Elements and Periodicity in Properties
Q1713
Polymer formation from monomers starts by
Polymers
Q1793
Which of the following is a redox reaction ?
Redox Reactions and Electrochemistry
Q1821
KO₂ (potassium super oxide) is used in oxygen cylinders in space and submarines because it:
S Block Elements
Q1842
The metallic sodium disolves in liquid ammonia to form a deep blue coloured solution. The deep blue colour is due to formation of:
S Block Elements
Q1868
A metal M readily forms its sulphate MSO₄, which is water-soluble. It forms its oxide MO which becomes inert on heating. It forms an insoluble hydroxide…
S Block Elements
Q1912
Na and Mg crystallize in BCC and FCC type crystals respectively, then the number of atoms of Na and Mg present in the unit cell of their respective crystal is:
Solid State
Q1974
Freezing point of an aqueous solution is (-0.186)^(o)C. Elevation of boiling point of the same solution is K b = 0.512 ^(o)C, K f = 1.86 ^(o)C, find the…
Solutions
Q1995
In a mixture of A and B, components show negative deviation when:
Solutions
Q2020
With increase of temperature, which of these changes?
Some Basic Concepts in Chemistry
Q2061
Number of atoms in 558.5 gram Fe (at. wt. of Fe = 55.85 g mol⁻¹) is
Some Basic Concepts in Chemistry
Q2086
In a compound C, H and N atoms are present in 9: 1: 3.5 by weight. Molecular weight of the compound is 108 g mol⁻¹. Molecular formula of compound is
Some Basic Concepts in Chemistry
Q2108
In a hydrogen atom, if energy of an electron in ground state is -13.6 eV, then that in the 2ⁿd excited state is
Atomic Structure
Q2151
Uncertainty in position of a minute particle of mass 25 g in space is 10⁻⁵ m. What is the uncertainty in its velocity (in ms⁻¹) (h = 6.6 × 10⁻³⁴ Js)
Atomic Structure
Q2227
Alum helps in purifying water by:
Surface Chemistry
Q2284
If an endothermic reaction is non-spontaneous at freezing point of water and becomes feasible at its boiling point, then:
Chemical Thermodynamics
Q2309
A heat engine absorbs heat Q₁ at temperature T₁ and heat Q₂ at temperature T₂. Work done by the engine is J (Q₁ + Q₂). This data:
Chemical Thermodynamics
Q2324
The heat required to raise the temperature of body by 1 K is called:
Chemical Thermodynamics
Q2331
For the reactions 2C + O₂ → 2CO₂; Δ H = -393 J 2Zn + O₂ → 2ZnO; Δ H = -412 J
Chemical Thermodynamics
Mathematics
Q2386
A plane which passes through the point (3,2,0) and the line (x - 4)/1 = (y - 7)/5 = (z - 4)/4 is:
Three Dimensional Geometry
Q2543
The d.r. of normal to the plane through (1, 0, 0), (0, 1, 0) which makes an angle π /4 with plane x+y=3 are:
Three Dimensional Geometry
Q2617
The maximum distance from origin of a point on the curve x = a sin t - b sin (at/b) y = a cos t - b cos (at/b), both a,b > 0 is
Limit, Continuity and Differentiability
Q2691
If 2a+3b+6c=0, (a,b,c R) then the quadratic equation a x² + bx + c = 0 has
Limit, Continuity and Differentiability
Q2792
The area bounded by the curves y = ln x,y = ln | x |,y = | ln 1mu x | and y = | ln | x | | is:
Integral Calculus
Q2886
The positive integer just greater than (1 + 0.0001)¹⁰⁰⁰⁰ is
Binomial Theorem and Its Simple Applications
Q2903
The coefficients of x^(p) and x^(q) in the expansion of (1 + x)^(p + q) are
Binomial Theorem and Its Simple Applications
Q2964
If the sum of the coefficients in the expansion of (a + b)ⁿ is 4096, then the greatest coefficient in the expansion is
Binomial Theorem and Its Simple Applications
Q2965
r and n are positive integers r > 1, n > 2 and coefficient of (r + 2)^(th) term and 3r^(th) term in the expansion of (1 + x)²ⁿ are equal, then n equals
Binomial Theorem and Its Simple Applications
Q3017
The equation of a circle with origin as a center and passing through an equilateral triangle whose median is of length 3 a is:
Coordinate Geometry
Q3036
If the chord y = mx + 1 of the circle x² + y² = 1 subtends an angle of measure 45° at the major segment of the circle then value of m is:
Coordinate Geometry
Q3060
The centres of a set of circles, each of radius 3, lie on the circle x² + y² = 25. The locus of any point in the set is:
Coordinate Geometry
Q3105
The centre of the circle passing through (0, 0) and (1, 0) and touching the circle x² + y² = 9 is:
Coordinate Geometry
Q3144
If | z - 4 | < | z - 2 |, its solution is given by:
Complex Numbers and Quadratic Equations
Q3172
The locus of the centre of a circle which touches the circle | z - z₁ | = a and | z - z₂ | = b externally (z, z₁ z₂ are complex numbers) will be:
Complex Numbers and Quadratic Equations
Q3205
z and w are two nonzero complex numbers such that | z | = | w | and Arg z + Arg w = π then z equals
Complex Numbers and Quadratic Equations
Q3279
lim n → ∞ (1^(p) + 2^(p) + 3^(p) +..... + n^(p))/(n^(p + 1)) is
Integral Calculus
Q3324
I n = ∫₀^(π /4) tan ⁿx dx then lim n → ∞ n[ I n + I n + 2 ] equals
Integral Calculus
Q3325
∫₀^(10π) | sin x |dx is
Integral Calculus
Q3326
∫₀² [ x² ]dx is
Integral Calculus
Q3327
∫ - π ^π (2x(1 + sin x))/(1 + cos ²x) dx is
Integral Calculus
Q3328
If y=f(x) makes + ve intercept of 2 and 0 unit on x and y axes and encloses an area of 3/4 square unit with the axes then ∫₀² xf'(x)dx is
Integral Calculus
Q3572
The order and degree of the differential equation (1 + 3dy/dx)^(2/3) = 4 d³y d x³ are
Differential Equations
Q3576
The solution of the equation d²y d x² = e⁻²ˣ
Differential Equations
Q3662
If y = (x + √(1 + x²))ⁿ, then (1 + x²) d²y d x² + xdy/dx is
Limit, Continuity and Differentiability
Q3837
The domain of sin ⁻¹[ log ₃(x/3) ] is
Sets, Relations and Functions
Q3885
The period of sin ²θ is
Sets, Relations and Functions
Q3886
Which one is not periodic?
Sets, Relations and Functions
Q4083
cot ⁻¹(√(cos α)) - tan ⁻¹(√(cos α)) = x, then sin x is equal to:
Trigonometry
Q4124
f is defined in [ - 5,5 ] as f(x) = x if x is rational = - x if x is irrational. Then
Limit, Continuity and Differentiability
Q4168
f(x) and g(x) are two differentiable functions on [0, 2] such that f''(x) - g''(x) = 0, f'(1) = 2, g'(1) = 4, f(2) = 3, g(2) = 9 then f(x) - g(x) at x = 3/2 is
Limit, Continuity and Differentiability
Q4169
If f(x + y) = f(x).f(y) x, y and f(5) = 2, f'(0) = 3, then f'(5) is
Limit, Continuity and Differentiability
Q4220
If f(1) = 1,f'(1) = 2, then lim x → 1 (√(f(x)) - 1)/(x - 1) is
Limit, Continuity and Differentiability
Q4221
Let f(2) = 4 and f'(x) = 4. Then lim x → 2 (xf(2) - 2f(x))/(x - 2) is given by
Limit, Continuity and Differentiability
Q4248
lim x → ∞ ((x² + 5x + 3)/(x² + x + 2))ˣ
Limit, Continuity and Differentiability
Q4260
lim x → 0 (log xⁿ - [ x ])/([ x ]), n N, ([x] denotes the greatest integer less than or equal to x)
Limit, Continuity and Differentiability
Q4263
lim x → 0 (√(1 - cos 2x))/(2 x) is
Limit, Continuity and Differentiability
Q4305
If a n = √(7 + 7 + √(7 +.......)) having n radical signs then by methods of mathematical induction which is true
Mathematical Induction
Q4433
If a>0 and discriminant of a x² + 2bx + c is -ve, then | a b ax + b b c bx + c ax + b bx + c 0 | is equal to
Matrices and Determinants
Q4677
Two common tangents to the circle x² + y² = 2a² and parabola y² = 8ax are:
Coordinate Geometry
Q4784
Number greater than 1000 but less than 4000 is formed using the digits 0, 1, 2, 3, 4 (repetition allowed). Their number is:
Permutations and Combinations
Q4785
Total number of four digit odd numbers that can be formed using 0, 1, 2, 3, 5, 7 (using repetition allowed) are:
Permutations and Combinations
Q4786
Five digit number divisible by 3 is formed using 0, 1, 2, 3, 4 and 5 without repetition. Total number of such numbers are:
Permutations and Combinations
Q4803
The sum of integers from 1 to 100 that are divisible by 2 or 5 is:
Permutations and Combinations
Q4867
A dice is tossed 5 times. Getting an odd number is considered a success. Then the variance of distribution of success is:
Statistics and Probability
Q5012
A problem in mathematics is given to three students A,B,C and their respective probability of solving the problem is 1/2,1/3 and 1/4. Probability that the…
Statistics and Probability
Q5013
A and B are events such that P(A B) = 3/4, P(A B) = 1/4, P(A) = 2/3 then P(A B) is:
Statistics and Probability
Q5033
In a triangle with sides a, b, c, r₁ > r₂ > r₃ (which are the ex-radii) then:
Properties of Triangle
Q5065
If a, b, c are distinct + ve real numbers and a² + b² + c² = 1 then ab + bc + ca is
Complex Numbers and Quadratic Equations
Q5077
Product of real roots of equation t²x² + | x | + 9 = 0
Complex Numbers and Quadratic Equations
Q5109
Difference between the corresponding roots of x² + ax + b = 0 and x² + bx + a = 0 is same and a ≠ b, then
Complex Numbers and Quadratic Equations
Q5110
If p and q are the roots of the equation x² + px + q = 0, then
Complex Numbers and Quadratic Equations
Q5111
If α ≠ β but α ² = 5α - 3 and β ² = 5β - 3 then the equation having α /β and β /α as its roots is
Complex Numbers and Quadratic Equations
Q5189
If 1, log ₉ (3¹⁻ˣ + 2), log ₃ (4.3ˣ - 1) are in A.P. then x equals
Sequence and Series
Q5240
Fifth term of a GP is 2, then the product of its 9 terms is
Sequence and Series
Q5241
l, m, n are the p^(th), q^(th) and r^(th) term of a G.P all positive, then | log l p 1 log m q 1 log n r 1 | equals
Sequence and Series
Q5242
Sum of infinite number of terms of GP is 20 and sum of their square is 100. The common ratio of GP is
Sequence and Series
Q5281
1³ - 2³ + 3³ - 4³ +... + 9³ =
Sequence and Series
Q5282
The value of 2^(1/4). 4^(1/8). 8^(1/16)...∞ is
Sequence and Series
Q5409
In a class of 100 students there are 70 boys whose average marks in a subject are 75. If the average marks of the complete class is 72, then what is the…
Statistics and Probability
Q5547
A triangle with vertices (4,0),(- 1, - 1),(3,5) is:
Coordinate Geometry
Q5561
Locus of mid point of the portion between the axes of x cos α + y sin α = p where p is constant is:
Coordinate Geometry
Q5574
If the pair of lines a x² + 2hxy + b y² + 2gx + 2fy + c = 0 intersect on the y -axis then:
Coordinate Geometry
Q5575
The pair of lines represented by 3a x² + 5xy + (a² - 2)y² = 0 are perpendicular to each other for:
Coordinate Geometry
Q5705
If a, b, c are vectors such that [ a b c ] = 4 then [ a × b b × c c × a ] =
Vector Algebra
Q5757
If | a | = 5,| b | = 4,| c | = 3 thus what will be the value of | a. b + b. c + c. a |, given that a + b + c = 0:
Vector Algebra
Q5790
If the vectors a, b and c from the sides B C, C A and A B respectively of a triangle A B C, then:
Vector Algebra
Q5791
If | a | = 4,| b | = 2 and the angle between a and b is π /6 then (a × b)² is equal to:
Vector Algebra
Q5792
If the vectors c, a = x i + y j + z k and b = j are such that a, c and b form a right handed system then c is:
Vector Algebra
Q5793
a = 3 i - 5 j and b = 6 i + 3 j are two vectors and c is a vector such that c = a × b then | a |:| b |:| c | =
Vector Algebra