GK
BASIC GENERAL KNOWLEDGE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When light passes from air into glass it experiences change of
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wavelength and speed
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frequency, wavelength and speed
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frequency and wavelength
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frequency and speed
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Explanation:
Detailed explanation-1: -Light travels faster in a medium of lower refractive index than in one with higher refractive index. As glass is optically denser than air, light travels slower in glass than in air. So, when light passes from air to glass, its speed decreases.
Detailed explanation-2: -Hint: As we know, when a light enters into a glass slab it bends towards the normal this phenomena is commonly called refraction. We know that refraction is due to the change in wavelength due to change in speed of light in other medium while frequency is inherent property of a light ray.
Detailed explanation-3: -The speed of light in glass increases with an increase in the wavelength of light.
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