Question

the focal length of convex lens is 50cm. if an object is at distance of 75cm from lens.Find image distance and magnification produced by lens?​

Answer 1

Answer:

distance : 30

magnification 30/75 (do it yourself)

Answer 2

Explanation:

f=50cm

u=-75cm

v=?

m=?

BY LENS FORMULA

1/50=1/v-(1/-75)

1/50-1/75=1/v

3-2/150=1/v

150=v

BY MAGNIFICATION FORMULA(FOR LENS)

m=v/u

m=150/-75

m=-2

hence image is made 150 cm from the lens which is real and inverted and twice the object

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