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Physics GK · Q465

Light

Competitive Exams · Physics GK · question 465

Q465

What is the principal focus of a spherical mirror?

A.
It is a point from which the rays of light appear to be coming from on the principal axis of a convex mirror
B.
It is the point on the principal axis through which rays of light parallel to the principal axis pass after reflection on appear to be arising from this point on the principal axis
Answer
C.
It is the centre of a hollow sphere of which the spherical mirror is a part
D.
It is the midpoint of a spherical mirror

Answer: Option B

Solution

Answer: Option B
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