CUET Questions — Physics

Q24. Under the influence of a uniform magnetic field, a charged particle moves with a constant speed v in a circle of radius r. The time period of the revolution of the particle: (a) depends on v and

Q11. The temp at which the resistance of a conductor becomes 30% more than that of its resistance at 47°C will be: (Given the value of temperature coefficient of resistance of the conductor is 2 x 10-

Q29. If U_E electric field energy density and U_m magnetic field energy density. Then

Q10. A heater boils x amount of water in time t₁ and another heater boils the same water in time t₂ having resistances R1 and R2 respectively. The ratio t₁/t₂ will be: (a) (R1/R2)² (b) (R2/R1) (c) (R2

Q40. A piece of copper and another of germanium are cooled from room temperature to 100 K. The resistance of: (a) copper increases and germanium decreases (b) copper decreases and germanium increases

Q7. The current flowing through the two bulbs marked as 60 W, 240 V each when connected in series with 240 V source is: (a) 0.125 A (b) 0.25 A (c) 4 A (d) 2 A

Q38. The capacities of two capacitors are C₁ and C₂ and their respective potentials are V₁ and V₂. If they are connected with a wire, then the loss of energy is given by: (a) C1C2(V1+V2) / (2(C1+C2))

Q19. In Ampere-circuital law, the missing term is: (a) i = ε₀ (dΦE / dt) (b) i = ε₀ (dΦE / dt) (c) i = (1/ε₀) (dΦE / dt) (d) i = (1/ε₀) (dΦE / dt)

Q24. Energy gap between valence band and conduction band of a semiconductor is approximately: (a) zero (b) 4 eV (c) 1 eV (d) 10 eV

Q5. Two electrons are moving with different kinetic energies. If 1st electron is moving with kinetic energy k and the 2nd electron with kinetic energy 4k, the ratio of their de Broglie wavelengths wil