A boy is standing in front of and close to a special mirror. He finds the image of his head bigger than normal, the middle part of his body of the same size, and his legs smaller than normal. The special mirror is made up of three types of mirrors in the following order from top downwards : (a) Convex, Plane, Concave (b) Plane, Convex, Concave (c) Concave, Plane, Convex (d) Convex, Concave, Plane

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Solution

(c) Concave, Plane, Convex

A concave mirror can form an erect and enlarged image, a plane mirror always forms an erect image of the same size as the object and a convex mirror forms an erect and diminished image.

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Q. Question 18
A child is standing in front of a magic mirror. She finds the image of her head bigger, the middle portion of her body of the same size and that of the legs smaller. The following is the order of combinations for the magic mirror from top.

(a) Plane, convex and concave
(b) Convex, concave and plane
(c) Concave, plane and convex
(d) Convex, plane and concave

Question 1

Boojho and Paheli were given one mirror each by their teacher. Boojho found his image to be erect and of the same size whereas Paheli found her image erect and smaller in size. This means that the mirrors of Boojho and Paheli are, respectively

(a) plane mirror and concave mirror.

(b) concave mirror and convex mirror.

(d) convex mirror and plane mirror.

Q. Two big mirrors A and B are fitted side by side on a wall. A man is standing at such a distance from the wall that he can see the erect image of his face in both the mirrors. When the man starts walking towards the mirrors, he finds that the size of his face in mirror A goes on increasing but that in mirror B remains the same.

(a) mirror A is concave and mirror B is convex
(b) mirror A is plane and mirror B is concave
(c) mirror A is concave and mirror B is plane
(d) mirror A is convex and mirror B is concave

The mirror which can form a magnified image of an object is : (a) convex mirror (b) plane mirror (c) concave mirror (d) both convex and concave mirrors

Q. A real image, equal in size to the object, is obtained when the object is placed at the centre of curvature in front of
(a) a plane mirror.
(b) a convex mirror.
(c) a concave mirror.
(d) either a convex or a concave mirror.

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(c) Concave, Plane, Convex A concave mirror can form an erect and enlarged image, a plane mirror always forms an erect image of the same size as the object and a convex mirror forms an erect and diminished image.

(c) Concave, Plane, Convex

A concave mirror can form an erect and enlarged image, a plane mirror always forms an erect image of the same size as the object and a convex mirror forms an erect and diminished image.