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Image Formed by a Spherical Mirror

Question 2A 1...

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Question 2
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

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Q. 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

Q. An object of length

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Q. An object is placed at a large distance in front of a concave mirror of radius of curvature 40 cm. The image will be formed in front of the mirror at a distance:

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Q. An object is placed at a distance of

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Q. A object is placed at

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