If the focal length of a spherical mirror is 12.5 cm, its radius of curvature will be : (a) 25 cm (b) 15 cm (c) 20 cm (d) 35 cm

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Solution

Answer : (a) 25 cm

Explanation:
Focal length (f) and radius of curvature (R) are related as
R=2f
(f = 12.5cm)
So,
R = 2 x 12.5 = 25cm

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If the focal length of a spherical mirror is 12.5 cm, its radius of curvature will be : (a) 25 cm (b) 15 cm (c) 20 cm (d) 35 cm

Answer : (a) 25 cm Explanation: Focal length (f) and radius of curvature (R) are related as R=2f (f = 12.5cm) So, R = 2 x 12.5 = 25cm

Answer : (a) 25 cm

Explanation:
Focal length (f) and radius of curvature (R) are related as
R=2f
(f = 12.5cm)
So,
R = 2 x 12.5 = 25cm