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InterviewSolution
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Question :a) An object is kept between centre of curvature and principal focus of a concave mirror. Write the nature of the image formed. b) Define focal length of a convex mirror. Write the relationship between focal length and radius of curvature of a convex mirror. |
Answer» Solution :(a)  Real and inverted (b) The distance between the pole and the PRINCIPAL focus of a convex mirror is called the focal length of a convex mirror. The relationship between focal length and radius of curvature of a convex mirror. The radius of curvature is FOUND to be equal to TWICE the focal length. R=2f This implies that the principal focus of a SPHERICAL mirror lies MIDWAY between the pole and centre of curvature. |
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