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Question

State whether the following statement is True or False.
Lights of all color travel at the same speed through any transparent medium.

A
True
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B
False
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Solution

The correct option is B False
Light of different colours travel at different speeds in medium because wavelength of light depends on refractive index and so velocity also depends on refractive index.
v=f.λ0(in vacuum)
But in medium
The wavelength is λ=λ0μ(in medium of refractive index μ)
and velocity becomes
v=f.λ0μ

Thus the given statement is false.

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