Question

Two plane mirrors m1 and m2 are struck on the inner surface of a hollow hemisphere of radius 60 cm. a lighted bulb is kept at the centre of this sphere so that both the mirrors make the image at same distance as the object from mirror.Identify m1 and m2 and find their focal length if the image formed by m1 and m2 coincide with the object .(Assume that m1 and m2 are different kinds of mirror ).

Answer 1

Hey Mate..

If the arc length AB and arc length CD  are part of the same  hollow spherical ball, then their radii are the same.

Then their focal lengths are also same , as  focal length = radius/2.

Convex mirror forms a virtual image always as the rays incident on it are diverged away.

Thank You..

Answer 2

Heya...

Ques :- Two plane mirrors m1 and m2 are struck on the inner surface of a hollow hemisphere of radius 60 cm. a lighted bulb is kept at the centre of this sphere so that both the mirrors make the image at same distance as the object from mirror.Identify m1 and m2 and find their focal length if the image formed by m1 and m2 coincide with the object .(Assume that m1 and m2 are different kinds of mirror ).???

Ans ______________

• The mirror are m1 and m2 with the same radius 60...

• That mirrors are stuck on the hollow hemisphere , so that both have equal radius and equal focal length that is ..

Radius / 2 = 60/2 = 30

• So the image will be virtual ....

Thank you