Question

A thin convex lens having power +1D is used to form a real and enlarged image of an object. The distance of the screen from the lens
a) Can be 150 cm
b) Can be 180 cm
c) Can be both
d) None of the above

Answer 1

Explanation:

Given,

p= +1D

so,

p=100/f(cm)

terefore,

f=100cm.

therefore, image formed as real and enlarge in size that means object placed in between 2f1 to f1 in front of convex lense.i.e a distnce of 150 cm..