Question

An object of height 4.25mm is placed at a distance of 10cm from a convex lense of power 5d find focal length of the lense and size of the image

Answer 1

1/v-1/-10=1/20
v=-20
m=v/u=2
h=2×4.25=8.5

Answer 2

Answer: The focal length of the lens is 20 cm and the size of image is 8.50 mm .