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An electromagnetic radiation of frequency n, wavelength λ, travelling with velocity v in air enters in a glass slab of refractive index (µ). The frequency, wavelength and velocity of light in the glass slab will be respectively
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n , λ and v μ μ -
n , 2λ and v μ -
n , λ and v μ μ μ -
2π , λ and v μ μ
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Correct Option: A
When electromagnetic wave enters in other medium, frequency reamains unchanged while wavelength and
| velocity become | times. | |
| μ |
So, For e.m. wave entering from air to glass slab (µ), frequency remains n,
| wavelength, λ' = | ||
| μ |
| and velocity, v' = | ||
| μ |
