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in Physics by (51.5k points)
A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is

(a) – 30 cm (b) – 20 cm
(c) – 40 cm (d) – 60 cm

1 Answer

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Best answer
(b) – 20 cm is the correct option.
by (33 points)
Can you please send the detalied solution of this question plz???

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