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प्रश्न
Air is optically .......... than glass.
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उत्तर
Air is optically rarer than glass.
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संबंधित प्रश्न
A ray of light strikes a plane mirror such that its angle of incidence is 30°. What angle does the reflected ray make with the mirror surface?
A boy with a mouth 5 cm wide stands 2 m away from a plane mirror. Where is his image and how wide is the image of his mouth?
The angle of reflection is equal to the angle of incidence:
(a) always
(b) sometimes
(c) under special conditions
(d) never
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The angle of incidence from air to glass at the point O on the hemispherical glass slab is.
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