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Assertion : The image formed by a concave mirror is certainly real if the object is virtual.

Monjur Alahi

Directions : Each of these questions contains two statements,
Assertion and Reason. Each of these questions also has four alternative choices, only one of which is the correct answer. You have to select one of the codes (a), (b), (c) and (d) given below.
(a) Assertion is correct, reason is correct; reason is a correct explanation for assertion.
(b) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
(c) Assertion is correct, reason is incorrect
(d) Assertion is incorrect, reason is correct

Assertion : The image formed by a concave mirror is certainly real if the object is virtual.
Reason : The image formed by a concave mirror is certainly virtual if the object is real.


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1 Answers

Salim Ahmed Kawsar

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(c) The image of real object may be real in case of concave mirror

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A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror.

(b) – 20 cm is the correct option.

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The image formed by a concave mirror is observed to be virtual, erect and larger than the object. Where should be the position of the object?

(d) When an object is placed between the pole and principal focus of a concave mirror, the image formed is virtual, erect, and larger than the object.

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Image formed by a plane mirror is (a) virtual, behind the mirror and enlarged. (b) virtual, behind the mirror

(b) virtual, behind the mirror and of the same size as the object.

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A concave mirror produces three times (enlarged) magnified real image of an object placed at 10 cm in front of it. Where is the image located?

Here, in case of concave mirror u=10 cm [u, is always negative] v =?;m = - 3 [real image] Now the magnification formula is m= -v/u or -3= -(v/-10) or , v = -30 cm. Image will...

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The image formed by a concave mirror is observed to be virtual, erect and larger than the object. Where should be the position of the object

The image formed by a concave mirror is virtual, erect and larger only when the object is placed between the pole of the mirror and its principal focus. So correct...

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Differentiate between virtual image formed by a concave mirror and of a convex mirror.

The virtual image formed by a concave mirror is always magnified whereas the virtual image formed by a convex mirror is diminished.

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What is the nature of the image formed by a concave mirror if the magnification produced by the mirror is +3?

Virtual and erect.

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You are provided with a convex mirror, a concave mirror, a convex lens and a concave lens. You can get an inverted image from

(c) both concave mirror and convex lens.

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A virtual image larger than the object can be obtained by (a) concave mirror (b) convex mirror

(a) Virtual image formed is larger in size in case of concave mirror.

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The image formed by a concave mirror is (a) always real (b) always virtual

(c) certainly real if the object is virtual

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