Critical angle for a light ray travelling from denser to rarer medium – InterviewSolution

1.	Critical angle for a light ray travelling from denser to rarer medium is defined as the angle of incidence at which the angle of refraction is 90°.If a ray of light travels from water (μw) to air (μa). Find the critical angle?
Answer» Critical angle for a light ray travelling from denser to rarer medium is defined as the angle of incidence at which the angle of refraction is 90°. If a ray of light travels from water $(μ_{w})$ to air $(μ_{a})$ . Find the critical angle?

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