A convex lens of focal length 6 cm is to be used as magnifying glass. In order to produce an erect image which is 5 times magnified, the distance between the object and the lens should be __________.

A convex lens of focal length 6 cm is to be used as magnifying glass.

1.	A convex lens of focal length 6 cm is to be used as magnifying glass. In order to produce an erect image which is 5 times magnified, the distance between the object and the lens should be __________.
Answer» Solution :Hint : Here `F=+6 cm and m=+5 =(v)/(u) rArr v=5u` `THEREFORE (1)/(v)-(1)/(u)=(1)/(f) rArr (1)/(5u)-(1)/(u)=(1)/(6) rArr -(4)/(5u)=(1)/(6) rArr u=-4.8 cm`

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A convex lens of focal length 6 cm is to be used as magnifying glass. In order to produce an erect image which is 5 times magnified, the distance between the object and the lens should be __________.

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