JEE Main 20257 Apr, Evening shift

Physics 21Chemistry 22

Physics

Q26The unit of √(2I/(ε₀ c)) is: (I = intensity of an electromagnetic wave, c: speed of light)Electromagnetic Waves
Q27A helicopter flying horizontally with a speed of 360 km/h at an altitude of 2 km, drops an object at an instant. The object hits the ground at a point O, 20 s…Kinematics
Q28Match List - I with List - II. List - I: (A) Isothermal (B) Adiabatic (C) Isobaric (D) Isochoric. List - II: (I) Δ W (work done) =0 (II) Δ Q (supplied heat)…Thermodynamics
Q29A capillary tube of radius 0.1 mm is partly dipped in water (surface tension 70 dyn/cm and glass water contact angle ≈ 0°) with 30° inclined with the…Properties of Solids and Liquids
Q30Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The radius vector from the Sun to a…Gravitation
Q32Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Refractive index of glass is higher…Optics
Q33Which one of the following forces cannot be expressed in terms of potential energy ?Work, Energy and Power
Q34An object with mass 500 g moves along x -axis with speed v=4√(x) m/s. The force acting on the object is:Laws of Motion
Q35Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The density of the copper (⁶⁴₂₉Cu)…Atoms and Nuclei
Q37The helium and argon are put in the flask at the same room temperature (300 K). The ratio of average kinetic energies (per molecule) of helium and argon is…Kinetic Theory of Gases
Q38Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Magnetic monopoles do not exist…Magnetic Effects of Current and Magnetism
Q39The dimension of √((μ₀)/(ε₀)) is equal to that of: (μ₀ = Vacuum permeability and ε₀ = Vacuum permittivity)Units and Measurements
Q40Match List - I with List - II. List - I: (A) Mass density (B) Impulse (C) Power (D) Moment of inertia. List - II: (I) [ML²T⁻³] (II) [MLT⁻¹] (III) [ML²T⁰] (IV)…Units and Measurements
Q41A dipole with two electric charges of 2 μ C magnitude each, with separation distance 0.5 μ m, is placed between the plates of a capacitor such that its axis…Electrostatics
Q42Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The outer body of an air craft is…Electrostatics
Q43A mirror is used to produce an image with magnification of 1/4. If the distance between object and its image is 40 cm, then the focal length of the mirror is…Optics
Q44A photoemissive substance is illuminated with a radiation of wavelength λ i so that it releases electrons with de-Broglie wavelength λ e. The longest…Dual Nature of Matter and Radiation
Q46The electric field in a region is given by E=(2 i+4 j+6 k)×10³ N/C. The flux of the field through a rectangular surface parallel to x - z plane is 6.0 Nm²C⁻¹…Electrostatics
Q47A parallel plate capacitor has charge 5×10⁻⁶ C. A dielectric slab is inserted between the plates and almost fills the space between the plates. If the induced…Electrostatics
Q48Two cylindrical rods A and B made of different materials, are joined in a straight line. The ratios of lengths, radii and thermal conductivities of these rods…Thermodynamics
Q50An inductor of reactance 100 Ω, a capacitor of reactance 50 Ω, and a resistor of resistance 50 Ω are connected in series with an AC source of 10 V, 50 Hz…Electromagnetic Induction and Alternating Currents