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The minimum distance between the object ...

The minimum distance between the object and its real image for concave mirror is

A

`f`

B

`2f`

C

`4 f`

D

Zero

Text Solution

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The correct Answer is:
D
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Assertion : The minimum distance between an object and its real image formed by a convex lens is 2f. Reason : The distance between an object and its real image is minimum when its magnification is - 1.

Knowledge Check

  • The minimum distance between the object and its real image for a concave mirror is

    A
    f
    B
    2f
    C
    4f
    D
    zero

  • Assertion :- The minimum distance between a real object and its real image formed by a convex lens is 4f. Reason :- Convex mirror and concave lens form a virtual and erect image for all positions of the real object.

    A
    If both Assertion & Reason are True & Reason is a correct explanation of the Assertion.
    B
    If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
    C
    If Assertion is True but the Reason is False.
    D
    If both Assertion & Reason are False.

  • The minimum distance between an object and its real image formed by a convex lens is

    A
    6f
    B
    4f
    C
    2f
    D
    f

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    We have a concave mirror of 10 cm focal length. Minimum distance between a real object and its real image formed by the mirror will be-

    The minimum distance between a real object and its real image formed by a thin converging lens of focal length f is

    In a convex lens of focal length F, the minimum distance between an object and its real image mus be -

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