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in Optics by (48.5k points)
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If an object is placed at 10 cm infront of a concave mirror of focal length 15 cm. The magnification of image is

(a) -1.5 

(b) 1.5

(c) -3 

(d) 3

1 Answer

+1 vote
by (48.1k points)
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Best answer

(d) 3

m = \(\frac{f}{f-u}\) = \(\frac{-15}{-15(-10)}\) = +3

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