Question

lens formula and magnification of image

Answer 1

Lens formula = 1/f = 1/v - 1/u.
Magnification of
1. Mirror = - v/u
2. Lens = v/u

Answer 2

Lens formula

1/f = 1/v - 1/u.

Magnification of

1. Mirror = - v/u

2. Lens = v/u