Question

Assertion (A) : During refraction, light will deviate from its path. (if angle of incidence is not zero)

Reason (R) : As light travel from one medium to another it changes its speed​

Answer 1

Answer:

a is true but r is false.

Explanation:

Answer 2

Assertion (A): During refraction, the light will deviate from its path. (if the angle of incidence is not zero)

Reason (R): As light travel from one medium to another it changes its speed

Both Assertion and Reason are True and The reason for the Assertion is correct.

Explanation:-

• Refraction of light takes place when an incident ray of light travels from one medium to another. This phenomenon takes place between the boundary of the two mediums. As we know, the speed of light in different mediums is different. Therefore, the incident rays of a light bend according to the speed in the two different mediums where the refraction occurs.

• When the light rays bends or changes their direction while passing through from one medium to another with different density it is called Refraction Of Light.

• The light rays that pass from one medium to another are called Incident rays. The angle between the ray of incident and the normal is called the Angle Of Incidence.

• When an incident ray of light rays travels from an optically rarer medium to a denser medium then they bend towards normal because in a rarer medium the speed of light is more so the speed of light decreases when the incident rays travel to the denser medium.

• Similarly, When light rays travel from an optically denser medium to a rarer medium then they bend away from the normal therefore the angle of refraction is greater than the angle of incidence because the speed of light is less in the denser medium so the speed of light increases when the incident rays travel to rarer medium.

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