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A concave mirror of focal length 15cm forms an image at a distance of 40 cm from it. The distance of the object from the mirror is A. 10 cm B. 20 cm C. 24 cm D. 30 cm

A concave mirror of focal length 15cm forms an image at a distance of 40 cm from it. The distance of the object from the mirror is
A. 10 cm B. 20 cm C. 24 cm D. 30 cm

Grade:Upto college level

2 Answers

Saurabh Koranglekar
askIITians Faculty 10336 Points
2 years ago
Dear student

The formula is

1/f = (1/u) + (1/v)

Regards
Vikas TU
14149 Points
2 years ago
 concave mirror has a focal length of 15 cm. Where should on object be placed in front of this mirror so as to obtain an image which is real, inverted and of the same size as the object

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