Question

A sphere of diameter 6cm is place in front of a concave mirror at a distance of 20cm. If the focal length of the mirror is 5cm .find the area of the image of that sphere

Answer 1

Answer:

v=-30

Explanation:

Given, u = - 10 cm , R = 15 cm, f = R/2 = - 15/2 cm From mirror formulae, 1/v + 1/u = 1/f 1/v = 1/f - 1/u 1/v = 1/10 - 2/15 v = - 30

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Answer 2

Answer:

answer v=30

Explanation:

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