CUET Questions — Physics — CUET UG

Q1. In an LCR circuit, which of the following expression has the dimension of frequency: (a) VC-RA (b) 1/RC (c) R/L (d) 1/VLC

Q20 Which of the following causes electric conduction in a semiconductor? (a) Holes only (b) Electrons only (c) Both electrons and holes (d) Neither holes nor electrons

Q37. Light of two different frequencies whose photons have energies 1 eV and 2.5 eV respectively, illuminate a metal of work function 0.5 eV. The ratio of the maximum KE of the emitted electrons will

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

Q33. In the potentiometer circuit the balance point is at X. The balance point will be shifted right towards B when: P R X A B Q G S (A) Resistance R is increased keeping all other parameters constant

Q32. A carrier wave of peak voltage 14 V is used to transmit a message. What should be the peak voltage of the modulating signal in order to have a modulation index of 70%? (a) 20.0 V (b) 2.0 V (c) 9.

Q7. Transverse nature of electromagnetic waves are/is evident by: A. Interference B. Dispersion C. Polarisation D. Diffraction Choose the correct answer from the options given below:

Q17. A particle moves three times as fast as an electron. The ratio of the de Broglie wavelength of the particle to that of the electron is 1.813 x 10-4. The mass of the particle is: (a) 1.67 x 10-27

Q43. Match List - I with List - II. List - I (A) 1 T (B) 1 H (C) J T⁻¹ (D) 1 Wb List - II (I) Vs (II) 1 m² A (III) Wb/m² (IV) Wb/A Choose the correct answer from the options given below: (a) (A)-(I),

Q15. The critical angle of a medium for a specific wavelength, if the medium has relative permittivity 3 and relative permeability 4/3 for this wavelength, will be: (a) 15° (b) 30° (c) 45° (d) 60°

Q50. A boat is moving due east in a region where the Earth's magnetic field is 5.0 × 10⁻⁵ NA⁻¹m⁻¹ due north and horizontal. The boat carries a vertical aerial 2 m long. If the speed of the boats is 1.

Q13. The current flow in the circuit of two battery with internal resistance and two external resistance as shown in figure will be (a) 1.5 A (b) 0.67 A (c) 0.9 A (d) 1.0 A

Q33. Which of the following is NOT a property of charges?

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

Q15. A cube of side 'a' has a charge Q at each of its vertices, what is the potential due to this charge array at the centre of the cube?

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

Q1. In the shown ac source gives a Voltage V=20 cos 2000t. Neglecting source resistance, the voltmeter and Ammeter reading will be. www 6Ω A 5mH 50µF R=42 ww V (a) 0 v, 1.4 A (b) 1.68 V, 0.47 A (c) 0

Q22. An a.c. source of 200 V is connected through a diode 'D' to a capacitor as shown in figure. Find the maximum potential difference across the capacitor: (a) 100 V (b) 200 V (c) 283 V (d) 310 V

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

Q3. A ray is incident normally on the face of an triangular prism of refracting angle of 60°. The refractive index of the prism is √3/2 The angle of deviation will be: