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A concave mirror of focal length 15 cm f...

A concave mirror of focal length `15 cm` forms an image having twice the linear dimension of the object. The position of the object when the image is virtual be :

A

7.5 cm

B

22.5 cm

C

40 cm

D

30 cm

Text Solution

Verified by Experts

The correct Answer is:
A
`u((m-1)/m)f,m=+2,f=-15rArru=-7.5cm`
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