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If the distances of an object and its vi...

If the distances of an object and its virtual image from the focus of a convex lens of focal length f are 1 cm each, then f is

A

`4 cm`

B

`(sqrt(2)+1)cm`

C

`2sqrt(2)cm`

D

`(2+sqrt(2)) cm`

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • The minimum distance between an object and its real image formed by a convex lens (of focal length f) is

    A
    `f/2`
    B
    f
    C
    2f
    D
    4f

  • The least distance between a point object and its real image formed by a convex lens of focal length F is

    A
    2 F
    B
    3 F
    C
    4 F
    D
    Greater than 4 F

  • The distance between the object and its real image from the convex lens is 60 cm and the height of image is two times the height of object . The focal length of the lens is

    A
    `20/3` cm
    B
    20 cm
    C
    `40/3 cm`
    D
    40 cm

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