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Question

Fill in the blanks:

(a) An image that cannot be obtained on a screen is called ________.

(b) Image formed by a convex ________ is always virtual and smaller in size.

(c) An image formed by a ________ 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 _______image.

(e) An image formed by a concave ________cannot be obtained on a screen.


Solution

(a) An image that cannot be obtained on a screen is called _virtual image_.

A virtual image cannot be obtained on a screen. Only real images can be obtained on a screen.

(b) Image formed by a convex __mirror__ is always virtual and smaller in size.

A convex mirror forms a virtual, diminished and upright image of an object.

(c) An image formed by a __plane__ 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 __real__ image.

Only real images can be obtained on a screen.

(e) An image formed by a concave __lens__cannot be obtained on a screen.

The image formed by concave lens is always virtual. A virtual image cannot be obtained on a screen.


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