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Modern Physics is an important topic in the Geophysics section in CUET PG exam. Practising this topic will increase your score overall and make your conceptual grip on CUET PG exam stronger.
This article gives you a full set of CUET PG PYQs for Modern Physics with explanations for effective preparation. Practice of CUET PG Geophysics PYQs including Modern Physics questions regularly will improve accuracy, speed, and confidence in the CUET PG 2026 exam.
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CUET PG PYQs for Modern Physics with Solutions
1.
The Rayleigh Jean's Law,
(A) agrees well with experimental results at low frequencies.
(B) agrees well with experimental results at longer. wavelengths.
(C) shows ultra-violet catastrophe at higher frequencies.
(D) agrees well with experimental results at higher frequencies.
Choose the correct answer from the options given below:- (A), (B) and (D) only
- (A), (B) and (C) only
- (B), (C) and (D) only
- (A), (C) and (D) only
2.
X- rays of wavelength 15 pm are scattered from a target. The wavelength of the X-rays scattered through 60° is (Given compton wavelength = 2.426 pm)- 13.787 pm (pm is pico metre)
- 16.213 pm (pm is pico metre)
- 15.5 pm (pm is pico metre)
- 1.6213 pm (pm is pico metre)
3.
In Photo- electric effect
(A) There is no time interval (very small ~ 10⁻⁹s) between incidence of light and emissions of photo electrons.
(B) Higher the frequency of light, more is the kinetic energy of photo electrons emitted.
(C) A bright light yields more photo-electrons than dim light.
(D) Blue light emits slower electrons than red light.
Choose the correct answer from the options given below:- (A), (B) and (C) only
- (A), (B) and (D) only
- (B), (C) and (D) only
- (A), (C) and (D) only
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