Question

an erect image 3 times the size of the object is obtain with the concave mirror of radius of curvature 36 cm find position of object
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Answer 1

Explanation:

Answer

R = -36 cm => f = R/2 = -18 cm , negative for a concave mirror. the object is placed 12 cm from pole of concave mirror , less than the focal length, to have an ERECT magnified image 3 times the object.

Answer 2

Explanation:

refer to the attachment