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Assertion: White light is incident on fa...

Assertion: White light is incident on face AB of an isosceles right angled prism as shown. Colours, for which refractive index of material of prism is more than 1.414, will be able to emerge from the face AC.

Reason:Total internal reflection cannot take place for the light travelling from a rarer medium to a denser medium.

A

If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.

B

If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

C

If both Assertion is true, but the Reason is false.

D

If both Assertion is false but the Reason is true.

Text Solution

Verified by Experts

The correct Answer is:
D
`i=45^@`
For `mugtsqrt2 or 1.414 rArr theta_Clt45^@`
`:.` They get TIR on face AC.
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