CUET · PHYSICS · PYQ PAPER 2023
Consider the following statements
(A) Corpuscular model predicted that if the ray of light bends towards the normal after refraction then the speed of light would be greater in the second medium
(B) In optical fibre, the refractive index of the core is kept higher than cladding.
(C) Diffraction due to clouds is efficient in equal measures for all wavelengths
(D) Light travels faster in glass than in air.
(E) When light reflects from an air glass plate interface, the reflected wave suffers a phase change of \( \pi \).
Choose the correct answer from the options given below :
- A (B), (C) and (D) Only
- B (A), (B) and (E) Only
- C (C), (D) and (E) Only
- D (A), (B), (C) and (D) Only
Answer & Solution
Correct Answer
(B) (A), (B) and (E) Only
Step-by-step Solution
Detailed explanation
(A) Correct. The corpuscular model predicted acceleration upon entering a denser medium. (B) Correct. For total internal reflection, \(n_{core} > n_{cladding}\). (C) Incorrect. Diffraction is wavelength-dependent (e.g., coronas show color variation). (D) Incorrect. Light travels…
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