Question

Read the following and answer any four questions from 19 (1) to 19 (V)
Sumati wanted to see the stars of the night sky. She knows that she needs a
telescope to see those distant stars. She finds out that the telescopes, which are
made of lenses, are called refracting telescopes and the ones which are made of
mirrors are called reflecting telescopes.
1x4
L
L₂
So she decided to make a refracting telescope. She bought two lenses, L, and
L; out of which Ly was bigger and L, was smaller. The larger lens gathers and
bends the light, while the smaller lens magnifies the image. Big, thick lenses
are more powerful. So to see far away, she needed a big powerful lens.
Unfortunately, she realized that a big lens is very heavy,
Heavy lenses are hard to make and difficult to hold in the right place. Also since the light is passing through the lens, the surface of the lens has to be extremely smooth. any flaws in the lens will change the image. it would be like looking through a dirty window​

Answer 1

Answer:

It is very lengthy to answer Sorry