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Image Formation in Concave Mirror

The real imag...

Question

The real image formed by a concave mirror is smaller than the object if the object is:

(a) between centre of curvature and focus
(b) at a distance greater than radius of curvature
(c) at a distance equal to radius of curvature
(d) at a distance equal to focal length

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Solution

(b) at a distance greater than the radius of curvature
The real image formed by a concave mirror is smaller than the object if the object is placed at a distance greater than the radius of curvature.

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Q. Question 3
Under which of the conditions a concave mirror can form a real image larger than the actual object?

(a) When the object is kept at a distance equal to its radius of curvature.
(b) When object is kept at a distance less than its focal length.
(c) When object is placed between the focus and centre of curvature.
(d) When object is kept at a distance greater than its radius of curvature.

Q. Under which of the conditions a concave mirror can form a real image larger than the actual object?

(a) When the object is kept at a distance equal to its radius of curvature.
(b) When object is kept at a distance less than its focal length.
(c) When object is placed between the focus and centre of curvature.
(d) When object is kept at a distance greater than its radius of curvature.

Q. An image formed by a concave mirror is

5

times greater than the object. If the radius of curvature is

40 c m

, determine the distance of the object from the mirror?

Q. An object is placed at 60 m in front of a concave mirror. If its radius of curvature is 40 m, then the image distance is equal to ___ m.

Q. (a) For which position of an object, a concave mirror forms a real image equal in size to the object?
(b) State one use of a concave mirror.
(c) An object of height 1 cm is placed at a distance of 15 cm from a concave mirror of radius of curvature 20 cm. Find the position, nature and size of the image formed.

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Image Formation in Concave Mirror

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