First slide

Total internal reflection - Ray optics and optical instruments

Question

When a ray of light emerges from a block of glass, the critical angle is

Easy

A

Equal to the angle of reflection
B

The angle between the refracted ray and the normal
C

The angle of incidence for which the refracted ray travels along the glass-air boundary
D

The angle of incidence

Solution

When a ray emerges at the critical angle ic, the angle of refraction in rarer medium will be equal to 90∘. This means that the refracted ray will travel along the the refracting surface which is glass in this case.

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App