Fill in the blanks:
(a) An image that cannot be obtained on a screen is called [[1]].
(b) Image formed by a convex [[2]] is always virtual and smaller in size.
(c) An image formed by a [[3]] mirror is always of the same size as that of the object.
(d) An image which can be obtained on a screen is called a [[4]] image.
(e) An image formed by a concave [[5]] cannot be obtained on a screen.

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answer is CONCAVE LENS, PLANE MIRROR, REAL IMAGE, VIRTUAL IMAGE, CONVEX MIRROR.

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Detailed Solution

a) An image may be defined as that point, where the light rays coming from an object meet or appears to meet after reflection or refraction.
There are two types of images.
1. Real image – The image that can be obtained on a screen.
2. Virtual image – The image that cannot be obtained on a screen.
Thus an image that cannot be obtained on a screen is called virtual image.

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