Question

Which of the following quantities remains constant during reflection of light?
(i) speed of light
(ii) frequency of light
(iii) wavelength of light

Answer 1

Answer:

speed of the light remains constant

Answer 2

Answer:

i) Speed of light remains constant.

ii) Frequency of the light remains constant.

Explanation:

In the question,

The light after the reflection changes its properties such as amplitude, its wavelength but the speed of the light and the frequency remains the same even after the reflection.

The speed of light depends over the medium of its travel as after the reflection the medium remains the same and therefore, the optical density will also remain the same, hence, the speed will not alter/ change.

Similarly,

According to the law of the Conservation of the Energy, the frequency also remains the same.

Therefore, the Speed and the Frequency remains the same.

Hence, (i) and (ii) are correct answer.