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A convex mirror produces 3 times enlarged image of an object placed at 10cm in front of it calculate the focal length of the mirror |
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Answer» Answer: FOCAL length is 0.07m or 3/40 m Explanation: MAGNIFICATION,m = 3 Object - distance, U = -10cm=-0.1 m Let the image of object be v m m = - v/u 3 = v/0.1 v = 0.3 m 1/v+1/u=1/f [here f is focal length] 1\0.3+1/0.1=1/f 1/f =40/3 f = 0.07 m |
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