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A beam of light consisting of red, green, and blue colors is incident on a right-angled prism. The refractive indices of the material of the prism for the above red, green and blue wavelengths are 1.39, 1.44 and 1.47, repectively. The prism will

A

Red only

B

Red and green

C

All the three

D

None

Text Solution

Verified by Experts

The correct Answer is:
A
`n = (1)/(sin 45^(@)) = sqrt(2) = 1.414`
only Red colour will be transmitted for green and blue `rarr` TIR.
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