Concept explainers
The term critical angle and to find the material in which light starts for its internally reflected case.
Answer to Problem 37P
Solution:
Since the refractive index of crown glass is higher than water so light must start from crown glass at its critical angle of
Explanation of Solution
Given Info:
Critical Angle:
Angle of incident angle is said to be critical angle when its refracted ray makes right angle with the normal provided light inters from denser medium to rarer medium.
Refractive index of water
Refractive index of crown glass
Let the angle of incident (critical angle)be
Angle of refraction be
Formula Used:
Apply Snell’s Law
Here, all alphabets are in their usual meanings.
Calculation:
Apply Snell’s Law
Since the refractive index of crown glass is higher than water so light must start from crown glass at its critical angle of
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Physics: Principles with Applications
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