(C) The Assertion is correct because diamond has a very high refractive index $(n \approx 2.42)$,which results in a very small critical angle $(C \app

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(C) The Assertion is correct because diamond has a very high refractive index $(n \approx 2.42)$,which results in a very small critical angle $(C \approx 24.4^\circ)$.When light enters a diamond,it undergoes multiple internal reflections due to this small critical angle,causing it to glitter brilliantly.The Reason is incorrect because the glittering of a diamond is not related to the absorption of sunlight,but rather to the phenomenon of Total Internal Reflection $(TIR)$.

Class 12 Physics Ray Optics and Optical Instruments Critical Angle and Total Internal Reflection

Easy

Assertion: Diamond glitters brilliantly.
Reason: Diamond does not absorb sunlight.

AIIMS 2005 All AIIMS

A
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
B
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
C
If the Assertion is correct but Reason is incorrect.
D
If both the Assertion and Reason are incorrect.

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Ray Optics and Optical Instruments

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Critical Angle and Total Internal Reflection

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MediumJEE MAIN 2022

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Assertion: Diamond glitters brilliantly.Reason: Diamond does not absorb sunlight.

Similar Questions

The figure shows a mixture of blue,green,and red colored rays incident normally on a right-angled prism. The critical angles of the material of the prism for red,green,and blue are $46^{\circ}$,$44^{\circ}$,and $43^{\circ}$ respectively. The arrangement will separate:

$A$ material is embedded between two glass plates. The refractive index $n$ of the material varies with thickness as shown in the figure. The maximum incident angle (in degrees) on the material for which the beam will pass through the material is

Glass has refractive index $\mu$ with respect to air and the critical angle for a ray of light going from glass to air is $\theta$. If a ray of light is incident from air on the glass with angle of incidence $\theta$,the corresponding angle of refraction is:

$A$ ray of light enters from air into a denser medium of refractive index $\mu = \frac{4}{3}$,as shown in the figure. The light ray undergoes total internal reflection at the adjacent surface as shown. The maximum value of angle $\theta$ should be equal to -

Light travels in two media $M_{1}$ and $M_{2}$ with speeds $1.5 \times 10^{8} \text{ m/s}$ and $2.0 \times 10^{8} \text{ m/s}$ respectively. The critical angle between them is.

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Assertion: Diamond glitters brilliantly.
Reason: Diamond does not absorb sunlight.