If an object is placed at infinity from a concave lens of focal length 15 cm, then the distance of virtual image from the lens will be:

If an object is placed at infinity from a concave lens of focal length

1.	If an object is placed at infinity from a concave lens of focal length 15 cm, then the distance of virtual image from the lens will be:
A.	10 cm
B.	15 cm
C.	20 cm
D.	at infinity
Answer» C. 20 cm

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If an object is placed at infinity from a concave lens of focal length 15 cm, then the distance of virtual image from the lens will be:

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