Numerical: a) The size of an image formed by a mirror having a focal length of 20cm is observed to be reduced to one third of its size. At what distance the ob
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Question
Numerical:
a) The size of an image formed by a mirror having a focal length of 20cm is observed to be
reduced to one third of its size. At what distance the object has been placed from the mirror?
a) The size of an image formed by a mirror having a focal length of 20cm is observed to be
reduced to one third of its size. At what distance the object has been placed from the mirror?
1 Answer

1. User Answers KratiJain
Answer:
u=40cm.
Explanation:
By mirror formula and linear magnification