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A convex mirror has a focal …

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A convex mirror has a focal length of 20cm find the position of the object for which the image will be the half of the size of the object

Posted by Harsh Sharma 7 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Shubham Sharma 7 years, 1 month ago

Kud ker la oloo

Yogita Ingle 7 years, 1 month ago

convex mirror f= + 20cm
Image size is 1/2 the size of object.
m = f/(f - v)
1/2 = 20/(20 - v)
20 - v = 40
v = 20 - 40 = -20 cm

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