Question

Using the mirror formula obtain relation between m and f

Answer 1

Answer:-

Explanation:

Solution:

Mirror Formula can be written as

⇒ 1/v + 1/u = 1/f

⇒ 1 + v/u = v/f                    (multiplying by v)

⇒ v/u = v/f - 1

= v - f/f

⇒ m = -v/u = f - v/f

$\boxed{\sf{m=\frac{f-v}{f} }}$

Also, u/v + 1 = u/f             (multiplying by u)

⇒ u/v = u/f - 1 = u- f/f

⇒ -v/u = f/f - u = m

$\boxed{\sf{m=\frac{f}{f-u} }}$

Hence, Relation Derived.