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Mirror Formula Examples

An object is ...

Question

An object is placed 40 cm in front of a convex mirror the image appears 15 cm behind the mirror , what is the focal length of the mirror?

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Q. A concave mirror of focal length

10 cm

and a convex mirror of focal length

15 cm

are placed facing each other

40 cm

apart. A point object is placed between the mirrors on their common axis and

15 cm

from the concave mirror. Find the position and nature of the image produced by successive reflections, first at the concave mirror and then at the convex mirror.

Q. An object placed 20 cm in front of a mirror is found to have an image 15 cm (a) in front of it, (b) behind the mirror. Find the focal length of mirror and the kind of mirror in each case.

Q. An object placed 20 cm in front of a mirror is found to have an image 15 cm (a) in front of it, (b) behind the mirror. Find the focal length of the mirror and the kind of mirror in each case.

Q. If an object is placed 10 cm in front of a convex mirror of focal length 20 cm, then distance of the image from the mirror is:

An object is placed at 25 cm from a convex mirror. Its image is formed 15 cm from the mirror. Find the focal length of the mirror.

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