Question

When light falls at critical angle on the surface of a rarer medium while coming from a denser medium, the refracting angle is ____________ .

Answer 1

AnsWer :

❄ When light falls at critical angle on the surface of a rarer medium while coming feom denser medium, the refractive angle is 90°

ExplanaTion :

$\boxed{\bf{\sf{\pink{\large{Critical\:Angle :}}}}}$

• Critical angle is made in denser medium for which the angle of refraction in rarer medium is 90°.
• When angle in denser medium is more then critical angle the light ray reflects back in denser medium following the laws of reflection and the interface behaves like a perfectly reflecting mirror.

✈ Relation between Refractive index of medium and critical angle is given by...

$\bigstar\:\boxed{\purple{\sf{\large{\mu=\dfrac{1}{\sin\:C}}}}}$

• $\mu$ denotes refractive index of medium
• C denotes critical angle

Answer 2

Answer:

90°

Explanation: