CUET Questions — Physics — CUET UG

Q35. A capacitor charged from a 50 V d.c. supply is found to have charge of 10µC. The capacitance of the capacitor would be: (a) 0.1μF (b) 0.2µF (c) 0.3µF (d) 0.4µF

Q33 What is the unit of electric flux in terms of the base units of SI? (a) kg⁻¹ m³ s⁻³ A⁻¹ (b) kgm³ s⁻³ A⁻¹ (c) kgm³ s⁻³ A⁻¹ (d) kgm³ s⁻³ A⁻¹

Q25. Match List - I with List - II LIST - I (Type of EM Wave) (A) Microwaves (B) Radio waves (C) Infrared waves (D) Ultraviolet rays LIST - II (Application) (I) Cellular phones (II) Greenhouse effect

Q30. The focal length of a spherical mirror is equal to: 1. A quarter of its radius of curvature 2. Half of its radius of curvature 3. Three quarters of its radius of curvature 4. Equal to its radius

Q14. A very long solenoid has 800 turns per unit length. A current of 1.6 A flows through it. Then the magnetic induction in the middle of the solenoid on its axis is approximately: (a) 16 x 10-4 T (b

Q6. The resistivity of a potentiometer wire is 10-7 Ωm and its cross-section area is 10-6 m². When a current of 0.1 A follows through the wire, its potential gradient is: (a) 10-1 V/m (b) 10-2 V/m (c)

Q42. A plane electromagnetic wave of frequency 30MHz travels in free space along the x-direction. At a particular point in space and time E = 6.3ĵ V/m. The B at this point would be: (a) 2.1 × 10⁻⁸ k̂

Q32. The resistance of a potentiometer wire of length 4 m is 10Ω. A resistance box and 2 V accumulator are connected in series with it. What resistance should be introduced in the box to have a potent

Q47. A tiny spherical oil drop of mass 8 mg is kept suspended by applying a potential difference of 100 V between two metallic plates kept separated by a distance 1 cm. The number of electrons on the

Q14. A capacitor of 25µF is connected in series with d.c Voltage of 5V. The value of current in the circuit will be: (a) 2 x 10⁵ A (b) 5A (c) 5 x 10⁶ A (d) Zero

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