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A ray of light travelling in air is inci...

A ray of light travelling in air is incident on the surface of glass slab at an angle of `40^(@)`. If the ray is deviated through `18^(@)`, determine critical angle for the glass-air interface.

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To solve the problem, we will follow these steps: ### Step 1: Identify the given information - Incident angle (i) = 40° - Deviation angle = 18° ### Step 2: Calculate the angle of refraction (r) The angle of refraction can be calculated using the formula: ...
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