GK
PHYSICS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
The angle of incidence of a light ray that strikes a mirror is 40 degrees. What will be its angle of reflection?
|
|
20 degrees
|
|
|
40 degrees
|
|
|
60 degrees
|
|
|
80 degrees
|
Explanation:
Detailed explanation-1: -A ray of light strikes a plane mirror at an angle of 40° to the mirror surface. What will be the angle of reflection? Now, we know that according to the law of reflection, the angle of incidence is equal to the angle of reflection. Therefore, the angle of reflection will be 50°.
Detailed explanation-2: -Hence the angle of reflection is 50°.
Detailed explanation-3: -According to the given data, the mirror is rotated through an angle 40∘. So the reflected ray will turn through an angle of 80∘.
Detailed explanation-4: -Solution. A ray of light strikes the glass slab at an angle 40° with the surface of the slab. Then the angle of incidence will be 50°.
There is 1 question to complete.