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The values of refractive indices of two optical media X and Y are $1.44$ and $1.30$, respectively. Compare the values of the following quantities pertaining to them :
(a) Speed of light
(b) Angle of refraction for same angle of incidence
Justify your answer.
(a) Speed of light
(b) Angle of refraction for same angle of incidence
Justify your answer.
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(a) • Speed of light in medium X is less than the speed of light in medium Y. ($\frac{1}{2}$ Mark)
• Reason: Refractive index of medium X is more than medium Y hence it is optically denser than medium Y. ($\frac{1}{2}$ Mark)
(b) • Angle of refraction in medium X is less than in medium Y. ($\frac{1}{2}$ Mark)
• Reason: Refractive index of medium X is more than medium Y hence it is optically denser than medium Y. ($\frac{1}{2}$ Mark) (2 Marks)
• Reason: Refractive index of medium X is more than medium Y hence it is optically denser than medium Y. ($\frac{1}{2}$ Mark)
(b) • Angle of refraction in medium X is less than in medium Y. ($\frac{1}{2}$ Mark)
• Reason: Refractive index of medium X is more than medium Y hence it is optically denser than medium Y. ($\frac{1}{2}$ Mark) (2 Marks)