Q146 / 160 · AP EAMCET 2021 (23 Aug Shift 1) · Physics

A well-cut diamond appears bright because

A
it emits light
B
it is radioactive
Correct answer
C
of its total internal reflection
D
it has high density

Solution

As we know that, the refractive index $\mu$ of diamond is highest. And since, $\mu=\frac{1}{\sin \theta_c}$ where, $\theta_C$ is critical angle and least. So, chances of total internal reflection will be highest inside diamond. Hence, diamond appears bright.

Hence, the correct answer is option: 'C'.

Relevant Questions

A light ray falls on a rectangular glass slab as shown in the figure. If total internal reflection occurs at the vertical face of the slab a23 May, 2025 (M)Critical angle and total internal reflection
A ray of light travels from an optically denser to rarer medium. The critical angle for the two media is ' '. The maximum possible deviation21 May, 2024 (M)Critical angle and total internal reflection
The angle of polarisation for a medium with respect to air is . The critical angle of this medium with respect to air is21 May, 2024 (M)Critical angle and total internal reflection
With respect to air, the critical angle in a medium for red light of wave length is . Other facts remaining same, critical angle for yellow 19 May, 2023 (M)Critical angle and total internal reflection
The critical angle for diamond with respect to air is nearly18 May, 2023 (M)Critical angle and total internal reflection
A light ray is incident from a medium of refractive index 2 into a medium of refractive index . The critical angle is06 Jul, 2022 (E)Critical angle and total internal reflection