what is the angle of minimum deviation for a Prism is the angle same for all kinds of optical materials
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Light is deflected as it enters a material with refractive index > 1.

A ray of light is deflected twice in a prism. The sum of these deflections is the deviation angle.

When the entrance and exit angles are equal, the deviation angle of a ray passing through a prism will be minimal.

A ray of light is deflected twice in a prism. The sum of these deflections is the deviation angle.

When the entrance and exit angles are equal, the deviation angle of a ray passing through a prism will be minimal.
abparida03:
Plz make it much clear
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