The direction of ray of light incident on a concave mirror is shown by PQ while directions in which the ray would travel after reflection is shown by four rays marked 1, 2, 3 and 4 (See figure). Which of the four rays correctly shows the direction of reflected ray ?

Options

A. 1
B. 2
C. 3
D. 4

Answer

B

Explanation

Here ray `vec(PQ)`, is passing through principle focus F while being incident on a concave mirror. Hence after getting reflected, it should be rendered parallel to principal axis of the mirror.
Thus, path no. 2 is correct path for ray `vec(PQ)`.