Question

1.prove mirror formula 1/f=1/u+1/v 2 f=R/2 3. ray diagram image formation by convex mirror.​

Answer 1

Answer:

The figure shows an object AB at a distance u from the pole of a concave mirror. The image A1B1 is formed at a distance v from the mirror. The position of the image is obtained by drawing a ray diagram.

Consider the ΔA1CB1 and ΔACB

∠A1CB1=∠ACB (vertically opposite angles)

∠AB1C=∠ABC (right angles)

∠B1A1C=∠BAC (third angle will also become equal)

∴ΔA1CB1 and ΔACB are similar 

∴A1B1AB=B1CBC

Similarly ΔFB1A1 and ΔFED are similar

∴A1B1ED=FB1EF

But ED=AB

A1B1AB=FB1

I hope its helpful for you ⭐⭐⭐⭐⭐

Answer 2

Answer:

see the pics the answers are there