CUET · PHYSICS · PYQ PAPER 2023
Choose the correct statements:
(A) The angle of incidence corresponding to an angle of refraction \(90^{\circ}\) is called critical angle (i).
(B) Refractive index of denser medium \(\mu=\frac{1}{\sin \left(i_c\right)}\).
(C) For \(i>i_c\), Snell's law of refraction cannot be satisfied.
(D) The refractive index of air increases with decrease in density.
(E) Rainbow is the combined effect of dispersion, refraction and reflection of sunlight by droplets.
Choose the correct answer from the options given below :
- A (A) and (B) only
- B (A), (B), (C) and (E) only
- C (C), (D) and (E) only
- D (A), (D) and (E) only
Answer & Solution
Correct Answer
(B) (A), (B), (C) and (E) only
Step-by-step Solution
Detailed explanation
Statements A, B, and C accurately define the critical angle and the conditions for Total Internal Reflection, while E correctly summarizes the optical causes of a rainbow. Statement D is false because the refractive index of air actually decreases as density decreases. B) (A),…
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