Question

A 5cm long needle lies along the principal axis axis of a convex lens of focal length 20cm in such a way that the end closer to the pole is 40cm from it. Find the length of the image of the needle formed by the mirror.​

Answer 1

Answer:

Maps help us in several ways including:

To make a very large area look small and understandable,

As tools for planning (i.e. dams, highways, urban development),

To help us find our way in unfamiliar areas,

Show us where major places are.

Answer 2

Answer:

this is the required answer