Does focal length of a spherical mirror changes when it is completely immersed in the water ? Predict and write the reason
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QUESTION :-
Does focal length of a spherical mirror changes when it is completely immersed in the water ? Predict and write the reason
ANSWER :-
No, focal length does changes when mirror is immersed completely in the water. Because reflection does not depend on surrounding medium.
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Mirrors, spherical or otherwise, operate on the principle that the angle of reflection of a ray of light equals the angle at which it strikes themirror's surface. That behavior is not affected by the medium in which the light travels, so themirror's focal length would be no different in air or water.
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