Fill in the blank.
An image formed by a concave ____________ cannot be obtained on a screen.

mirror

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lens

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both mirror and lens

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convex-concave

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Solution

The correct option is B lens
Correct answer is (b).

In concave mirror light rays originally head towards the focal point on the other side are bent, emerging parallel to the axis. So it always produces a virtual image and hence cannot be focused on a screen.

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Similar questions

Mark ‘T’ if the statement is true and ‘F’ if it is false:

(a) We can obtain an enlarged and erect image by a convex mirror. (T/F)

(b) A concave lens always forms a virtual image. (T/F)

(d) A real image cannot be obtained on a screen. (T/F)

(e) A concave mirror always forms a real image. (T/F)

Question 1 (e)
Fill in the blank:
An image formed by a concave ________________ cannot be obtained on a screen.

Question 6

An erect and enlarged image can be formed by

(a) only a convex mirror.

(b) only a concave mirror.

(d) both convex and concave mirrors.

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