A concave mirror of focal length fin air is used in a medium of refractive index 2. What will be the
focal length of the mirror in the medium?
(A) 4 f
(B) 2f
C) f/2
(D) None of these
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Answer:
F
Explanation:
Focal length of a mirror depends only on the radius of curvature. so it will not be changed.
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