JEE Main 20253 Apr, Evening shift

Physics 22Chemistry 19

Physics

Q27A particle moves along the x -axis and has its displacement x varying with time t according to the equation: x = c₀(t² - 2) + c(t - 2)² where c₀ and c are…Kinematics
Q28Width of one of the two slits in a Young's double slit interference experiment is half of the other slit. The ratio of the maximum to the minimum intensity in…Optics
Q29Using a battery, a 100 pF capacitor is charged to 60 V and then the battery is removed. After that, a second uncharged capacitor is connected to the first…Electrostatics
Q30A solid steel ball of diameter 3.6 mm acquired terminal velocity 2.45 × 10⁻² m/s while falling under gravity through an oil of density 925 kg m⁻³. Take…Properties of Solids and Liquids
Q31A motor operating on 100 V draws a current of 1 A. If the efficiency of the motor is 91.6%, then the loss of power in units of cal/s isCurrent Electricity
Q33A monochromatic light of frequency 5 × 10¹⁴ Hz travelling through air, is incident on a medium of refractive index '2'. Wavelength of the refracted light will…Optics
Q35Pressure of an ideal gas, contained in a closed vessel, is increased by 0.4% when heated by 1°C. Its initial temperature must be:Kinetic Theory of Gases
Q36Two monochromatic light beams have intensities in the ratio 1:9. An interference pattern is obtained by these beams. The ratio of the intensities of maximum…Optics
Q37Two cylindrical vessels of equal cross sectional area of 2 m² contain water upto heights 10m and 6m, respectively. If the vessels are connected at their…Properties of Solids and Liquids
Q38A magnetic dipole experiences a torque of 80√(3) N m when placed in uniform magnetic field in such a way that dipole moment makes angle of 60° with magnetic…Magnetic Effects of Current and Magnetism
Q39In the resonance experiment, two air columns (closed at one end) of 100 cm and 120 cm long, give 15 beats per second when each one is sounding in the…Oscillations and Waves
Q40Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: The Bohr model is applicable to hydrogen…Atoms and Nuclei
Q41A particle is projected with velocity u so that its horizontal range is three times the maximum height attained by it. The horizontal range of the projectile…Kinematics
Q42An electric bulb rated as 100W-220V is connected to an ac source of rms voltage 220V. The peak value of current through the bulb is:Electromagnetic Induction and Alternating Currents
Q43Match the LIST-I with LIST-II. LIST-I: A. Boltzmann constant; B. Coefficient of viscosity; C. Planck's constant; D. Thermal conductivity. LIST-II: I. ML²T⁻¹…Units and Measurements
Q44An ideal gas exists in a state with pressure P₀, volume V₀. It is isothermally expanded to 4 times of its initial volume (V₀), then isobarically compressed to…Thermodynamics
Q45A block of mass 1 kg, moving along x with speed v i = 10 m/s enters a rough region ranging from x = 0.1 m to x = 1.9 m. The retarding force acting on the…Work, Energy and Power
Q46An electron in the hydrogen atom initially in the fourth excited state makes a transition to n^(th) energy state by emitting a photon of energy 2.86 eV. The…Atoms and Nuclei
Q47Two cells of emfs 1 V and 2 V and internal resistances 2 Ω and 1 Ω, respectively, are connected in series with an external resistance of 6 Ω. The total…Current Electricity
Q48Light from a point source in air falls on a spherical glass surface (refractive index, μ = 1.5 and radius of curvature = 50 cm). The image is formed at a…Optics
Q49The excess pressure inside a soap bubble A in air is half the excess pressure inside another soap bubble B in air. If the volume of the bubble A is n times…Properties of Solids and Liquids
Q50A physical quantity C is related to four other quantities p, q, r and s as follows C = (pq²)/(r³√(s)). The percentage errors in the measurement of p, q, r and…Units and Measurements