CUET Questions — Physics

Q17. The wave length of Red light in the visible region is about 760 nm the energy of photon in that case will be: (a) 2.43 eV (b) 3.18 eV (c) 1.64 eV (d) 2.68 eV

Q26. A short solenoid of radius a and n₁ number of turns per unit length and length L is kept coaxially inside a very long solenoid of radius b and n₂ number of turns per unit length. What is the mutu

Q30. An alpha-particle moves with a speed of (5 x 10⁵î)ms⁻¹. It enters a region where there is a magnetic field of magnitude 4T, directed at an angle of 45° to the X-axis and lying in XY plane. The ma

Q29. A 25 µF capacitor, a 0.10 H inductor and a 25 Ω resistor is connected in series with an ac source of emf ε = 310 sin 314 t. What is the frequency of AC source? (a) 314 Hz (b) 100 Hz (c) 50 Hz (d)

Q45. Arrange the following in the increasing order : (A) Micrometre (B) Centimetre (C) Mile (D) Kilometre Choose the correct answer from the options given below:

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

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

Q16. An insulating rod of length L carries charge q distributed uniformly on it. The rod is pivoted at one end and is rotated at a frequency f about a fixed perpendicular axis. Then the magnetic dipol

Q5. Two spheres of silver of same radii, one solid and the other hollow are charged to the same potential, then: (a) solid sphere will have more charge (b) hollow sphere will have more charge (c) both

Q45. A magnet suspended freely at the Equator will set itself ______ to the surface of Earth, while one suspended at pole will stand ______. (a) vertical, parallel (b) parallel, parallel (c) parallel,

Q19. The magnitude of a magnetic force on a current carrying conductor is given by: (a) q dv (b) q vB sine (c) ilB sine (d) q(E+VB sine)

Q41. Three charges q, -q, q placed at the vertices of an equilateral triangle as shown in figure. What is the magnitude of force on charge placed at position 3 due to the presence of other two charges

Q36. If c is the speed of light; λ and v wavelength and frequency, respectively, of an electromagnetic radiation, then which of the following is true?

Q47. A bulb and a capacitor are connected in series to an a.c. source. A dielectric slab is now introduced between the plates of the capacitor. The intensity of the bulb will be: (a) Zero (b) Increase

Q42. Which of the following radiations will have maximum penetration power? (a) X-rays (b) a-rays (c) ẞ-rays (d) γ -rays

Q8. A Neutron is moving with a velocity of V in non-uniform magnetic field as shown in figure. B Velocity v of neutron would be (a) Maximum at B (b) Same at A, B and C (c) Minimum at A and C (d) Maxim

Q2. Match List - I with List - II. LIST - I (A) [M° L-2 T⁰ A¹] (B) [M-1 L-2 T3 A2] (C) [M L³ T-3 A-2] (D) [M-1 L-3 T+3 A+2] LIST - II (I) Conductance (II) Electrical conductivity (III) Current density

Q18. Which of the following frequency would be suitable for the beyond the horizon communication using sky waves?

Q22. Eight identical spherical drops, each having a potential of 9 V are combined together to form a single large drop. The potential of this large drop will be: (a) 4.5 V (b) 18 V (c) 36 V (d) 72 V

Q1. Resolving power of a telescope can be increased by increasing: (a) Wavelength of light incident at telescope (b) Diameter of eye piece (c) Focal length of eyepiece (d) Diameter of Objective lens