In refraction of light through a prism, the light ray: - Noon Academy

In refraction of light through a prism, the light ray:

Class 10 | ICSE | Physics | Refraction of Light at Plane Surfaces | Selina

In refraction of light through a prism, the light ray:

a. Suffers refraction only at one face of the prism

b. Emerges out from the prism in a direction parallel to the incident ray

c. Bends at both the surfaces of prism towards its base

d. Bends at both the surfaces of prism opposite to its base.

Solution:

The correct option is (c).

In a prism, a ray of light is deflected twice. The deviation angle is the sum of these deflections.
The angle of incidence by which the beam enters the object determines the deviation angle. With increasing incidence angle, the deviation angle falls at first, then increases.

i

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