Question

state the two laws of reflection ​

Answer 1

Reflection

The process of bouncing back of light rays in same medium after striking at the interface of two media is called reflection of light.

Laws of reflection -

$\implies$Angle of incidence = Angle of reflection

$\angle \: i = \angle \: r$

$\implies$Incident ray , reflected ray and normal to the reflecting surface always lie in the same plane.

ADDITIONAL INFORMATION

$\longrightarrow$Incident ray - The ray of light which travels towards the mirror is called incident ray.

$\longrightarrow$Reflected ray - The ray which bounces off the surface of mirror is called reflected ray.

$\longrightarrow$Angle of incidence - Angle made by incident ray with normal ray. It denoted by $\angle \: i$

$\longrightarrow$Angle of reflection - Angle made by reflected ray with normal ray. It denoted by $\angle \: r$

$\bigstar$Important information about reflection -

$\implies$A ray striking the surface normally retraces it's path.

When a ray strikes normally , angle of incidence is 0. According to the laws of reflection,$\angle \: i = \angle \: r = 0$. Thus an incident ray retraces it's path.

$\implies$Laws of reflection are also obeyed by spherical or curved surfaces.

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Answer 2

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Reflection

The process of bouncing back of light rays in same medium after striking at the interface of two media is called reflection of light.

Laws of reflection -

⟹ Angle of incidence = Angle of reflection

$\angle \: i = \angle \: r∠i=∠r$

⟹ Incident ray , reflected ray and normal to the reflecting surface always lie in the same plane.

ADDITIONAL INFORMATION

⟶ Incident ray - The ray of light which travels towards the mirror is called incident ray.

⟶ Reflected ray - The ray which bounces off the surface of mirror is called reflected ray.

⟶ Angle of incidence - Angle made by incident ray with normal ray. It denoted by $\angle \: i∠i$

⟶ Angle of reflection - Angle made by reflected ray with normal ray. It denoted by $∠r$

★ Important information about reflection -

A ray striking the surface normally retraces it's path.

When a ray strikes normally , angle of incidence is 0. According to the laws of$reflection,\angle \: i = \angle \: r = 0∠i=∠r=0 .$Thus an incident ray retraces it's path.

⟹ Laws of reflection are also obeyed by spherical or curved surfaces.

$\huge\pink{Hope\:It \:Help!!}$