27. The radius of curvature of a concave mirror is 15 cm.
Its focal length will be
(a) - 15 cm (b) - 7.5 cm (c) + 30 cm (d) + 7.5 cm
Give answer with explanations
Answers
Answered by
1
f=-7.5
As we know f=R/2 so
15 /2 =- 7.5
because it is a concave mirror so f is negative
Answered by
1
Answer:
( b) -7.5 is the correct answer
Similar questions