Name the constant ratio of the sine of angle of incidence to the sine of angle of refraction.

The ratio of sine of angle of incidence to the sine of angle of refraction is called…… .

Angle of incidence is equal to the angle of reflection.

Angle of incidence is equal to angle of reflection

What happens if angle of incidence is more than critical angle?

A ray of light is reflected at angle 30^@ .If the angle of incidence becomes double,then angle of reflection will be

The perimeter of a triangle ABC is six times the arithmetic mean of the sines of its angles. If the side ai s1 then find angle Adot