Question

The angle of incidence for a ray of light have been 30ᵒ , what will be the angle of reflection ?​

Answer 1

${\underline {\boxed {\Large {\bf { 30^\circ } }}}}$

If the angle of incidence for a ray of light have been 30°, so the angle of reflection will also be 30°.

Accroding to the second law of reflection,

• Angle of reflection and angle of incidence are always equal.

Or we can say that,

$\longmapsto \sf \angle i = \angle r \; \; \red {\bigstar}$

Considering this law, it is clear that of angle of incidence is 30°, then angle of reflection will be also 30°.

More Information :

Reflection of light :

When the light come back in the same medium after falling on the surface, it is called reflection of light.

Types of reflection :

$\longrightarrow$ Regular reflection : When the parallel beam of light strikes on the surface and if it reflects back as a parallel beam in one particular direction, then we call it regular reflection.

$\longrightarrow$ Irregular reflection : When the parallel beam of light strikes on the surface and if it reflects back as a parallel beam in random (different) directions, then we call it irregular reflection.

Irregular reflection is also known as 'diffused reflection'.