Question

A) 0.3 cm/sec
B) 0.1 m/sec
C) 0.5 m/ sec D) 0.5 cm/sec
ANS.
7. An object 2 cm high is placed at a distance of 16 cm from a concave mirror, which produces a real image 3
cm high. What is the focal length of the mirror?

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Answer 1

Explanation:

0.5m/sec is the focal length of the mirror