CUET Questions — Physics — CUET UG

Q46. In a double slit experiment, the distance between slits is increased 10 times whereas their distance from screen is halved, then what is the fringe width? (a) it remains same (b) become 1/5 (c) b

Q36. In terms of Bohr radius a₀, the radius of 2nd Bohr orbit of Hydrogen is: (a) 4a₀ (b) 8a₀ (c) √2a₀ (d) 2a₀

Q42. A plane electromagnetic wave of frequency 50 MHz travels in free space along the x-direction. At a particular point in space and time E = 9.3 jVm-1. What is B at this point? (a) (3.1 × 10-8k)T (b

Q32. Frequencies in the UHF range normally propagate by means of: (a) Ground waves (b) Sky waves (c) Surface waves (d) Space waves

Q21. Monochromatic light of frequency 6x10¹⁴ Hz is produced by a laser source. The energy of photon of light is: (a) 3.98x 10⁻¹⁹ J (b) 39.8x 10⁻¹⁹ J (c) 1.12x 10⁻²⁰ J (d) 2.24x 10⁻²⁰J

Q21. Charge on a conducting metal sphere is present: (a) on the surface of the sphere (b) inside the sphere (c) outside the sphere (d) both inside and outside the sphere

Q22. Four lenses of focal length +5 cm and ±200 cm are available for making a telescope. To produce the largest magnification for making a telescope with the help of these lenses, the focal length of

Q49. A bar magnet of magnetic moment 3J/T lies aligned with the directions of a uniform magnetic field of 0.2 T. The amount of work, required so as to align its magnetic moment opposite to the field d

Q27. Which quantity is increased in a step-down transformer?

Q37. A point charge q moves from point A to point D along the path ABCD (as shown) in a uniform electric field E pointing parallel to negative direction of X-axis. The co-ordinates of A, B, C, D are (

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 = 6.3) V/m. The B at this point would be: (a) 2.1 × 10⁻⁸k T

Q4. Energy of a photon corresponding to a wavelength of 600 nm is 2.08 eV. The energy of a photon of wavelength 400 nm will be: (a) -1.39 eV (b) 3.12 eV (c) 4.68 eV (d) 0.92 eV

Q45. The induced e.m.f in a coil rotating in a uniform magnetic field will increases if A. Total number of turns in the coil decreases B. Magnetic field increases C. Speed of rotation of coil decrease

Q35. The current flowing through a wire as a function fo time is given as: I = 3t² + 2t + 5The charge flowing through any cross-section of the wire in first 2 s is: (a) 5 C (b) 17 C (c) 16 C (d) 22 C

Q28. Diameter of the objective lens of a telescope is 250 cm. For light of wavelength 600 nm, coming from a distant object, the limit of resolution of the telescope is close to: (a) 1.5 x 10-7 rad (b)

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?

Q36. When a ray of light enters a glass slab from air: (a) its wavelength decreases (b) its wavelength increases (c) its frequency increases (d) neither its wavelength nor its frequency changes

Q46. What is the ratio of wavelength in the given figure of energy levels of a molecule -E 5-3 E -2E λ -5E (a) 5:1 (b) 1:4 (c) 2:3 (d) 6:1 λ 2

Q30. Match List - I with List - II List-I (A) Range (B) Band width (C) Attenuation (D) Transducer List-II (1) Range of frequencies over which communication system works (II) The largest distance betwe

Q49. The focal length of the objective of a microscope if fo and that of the eye piece if fe. The aperture of objective is do and that of eye piece is de. Which of the following relation is correct? (