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Question
A crack in the window pane appears silvery when viewed from some particular angle. This phenomenon is due to:
Options
reflection of light
refraction of light
total internal reflection of light
dispersion of light
MCQ
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Solution
Total internal reflection of light
Explanation:
A crack contains air, which is optically rarer than the glass. At a suitable angle, light travelling in the glass undergoes total internal reflection at the glass–air boundary, making the crack appear silvery.
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