Question 31
Light and ReflectionThe most suitable type of mirror used for the construction of a searchlight is the
- A.concave mirror
- B.convex mirror
- C.spherical mirror
- D.parabolic mirror
Show the answer and explanation
Answer: D (parabolic mirror)
Explanation
A parabolic mirror with the lamp at its focus sends out a strong parallel beam, which is what a searchlight needs.