CUET Questions — Physics

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? (