Question

the angle between incident ray and reflected ray is 60 degree what is angle of incident

Answer 1

Explanation:

if the angle between incident ray and reflected ray chest degree then from the normal up to the incident ray the angle will be 30 degree and from the normal the angle of reflection will be of 30 degree and this is only possible in the case of a plane mirror.

the characteristics of the plane mirror say that the

angle of reflection = the angle of incidence

Answer 2

$\tt{\angle \: i \: = \angle \: r}$

$\tt{ \angle \: i \: + \angle \: r \: + dist. \: between \: them \: = 180 \degree}$

$\tt{ \angle \: i \: + \angle \:i = 180 - 60}$

$\tt{2 \angle \: i = 120 }$

$\tt{\angle \: i \: = 60 \degree}$

$\tt \: then$

$\angle \: r \: = 60 \degree$