Question

15. If the wavelength ( I.e colour) of incident
light on a
on a concave mirror is change, how will
the focal length of the mirror change?​

Answer 1

Answer:

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Explanation:

If the wavelength of incident light on a concave mirror is increased, how will the focal length of the mirror change ? Solution : The focal length of the mirror does not change on changing the wavelength of light incident on it. This is because f=R/2, i.e., f depends only on radius of curvature of the mirror.