Question

Write the formulas of mirrors and lenses also state the shells law class 10 .

Answer 1

the ratio sin angle of incidence to the sin angle of refraction is constant

Answer 2

according to snells law sine of angle of incidence to the sine of angle of refraction is constant for a given pair of media

sin i/sin r = 1meu 2

Answer 3

MIRROR FORMULA :
$\frac{1}{ v} + \frac{1}{u} = \frac{1}{f}$

LENS FORMULA:
$\frac{1}{v } - \frac{1}{u} = \frac{1}{f}$

Snell's law : it states that the ratio of sin of angle of incidence to ratio of sin of angle of refraction is equals to constant
i.e sin i / sin r = constant