The image formed by a concave mirror is ...

The image formed by a concave mirror is twice the size of the object. The focal length of the mirror is 20 cm. The distance of the object from the mirror `is//are`

20 cm

30 cm

25 cm

15 cm

Text Solution

Verified by Experts

The correct Answer is:

In this case |V|=2|u|
by applying mirror formula u=-10, -30
so The distance of the object from the mirror is (are) 10,30 cm

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