CUET Questions — Physics

Q2. Which of the following is the correct equation for the law of radioactive decay? Symbols have their usual meaning. (1) N(t) = Noe-t/x (2) N(t) = Noe-At (3) N(t) = Noe-2/t (4) N(t) = Noe-2At

Q12. What will be the minimum length of antenna required to transmit a radio signal of frequency 10 MHz? (a) 30 m (b) 15 m (c) 7.5 m (d) 60 m

Q13. If the 8th bright band of wavelength λ₁ coincides with 9th bright brand of wavelength 22 in a Young's double slits experiment, then the possible wavelength of two lights is: (a) λ₁ = 450 nm, λ₂ =

Q44. Speed of Electromagnetic wave is Not the same: (a) in all media (b) for all intensities in vacuum (c) for all frequencies in vacuum (d) for all wavelengths in vacuum

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

Q39. We can reduce eddy currents in the core of transformer by: (a) increasing the number of turns in the secondary coil (b) taking laminated core (c) making step down transformer (d) using a weak AC

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)

Q30. A bubble in glass slab (μ = 1.5) when viewed from one side appears at 5 cm and 2 cm from otherside, then the thickness of the glass slab is: (a) 2.5 cm (b) 7.5 cm (c) 10.5 cm (d) 17.5 cm

Q50. Time period of oscillation of a bar magnet in a uniform magnetic field is T₀. The magnet is cut into 3 equal parts transverse to its length. The new time period of oscillation of one part will be

Q12. Arrange the following EM waves increasing order of their frequency? A. Ultraviolet rays B. Gamma rays C. Radio waves D. Infrared waves E. X-rays Chose the correct answer from the options given b