Question

what is reflection? laws of reflection and is light travel in straight line?​

Answer 1

What is reflection ?

When a light strikes on a path and return back this process is known as reflection .

Law of reflection

The law of reflection states that,

On reflection from a smooth surface, the angle of the reflected ray is equal to the angle of the incident ray .

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Does the light travel in straight line ?

According to the modern scientist it is persumed that light travels in a straight path it do not need any medium for its propagation .

Answer 2

Answer:

$\longmapsto$ Reflection is the bouncing back off light from a shiny, smooth or a polished surface.

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$\longmapsto$ Laws of Reflection :

1. The incident ray, the reflected ray & the normal lies in the same plane on the point of indifference.
2. Angle of incidence is always equal to angle of reflection. $\boxed{ \angle \tt \: i = \angle \tt \:r}$

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$\longmapsto$ Yes, light always travels in a straight line and the property by which light travels in a straight line is known as Rectilinear Propagation of Light .