Question

A lens produces a magnificent of -0.5 is this a converging or diverging lens if the focal length of a lens is 6cm draw a ray diagram showing the image formation in this case​

Answer 1

Since focal length is positive, therefore it is a convex lens.

Convex lens is converging lens.

Since m=-1/2=v/u

Therefore, v=-u/2

f =6cm

1/6=1/v-1/u

By solving, UV=6u-6v

Putting value of v

-u/2=9

U=-18cm

V=9cm