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The distance of an object from the pole ...

The distance of an object from the pole of a concave mirror is equal to its radius of curvature. The image must be:

A

real

B

inverted

C

same sized

D

erect

Text Solution

Verified by Experts

The correct Answer is:
A
If object is at centre then image forms on the centre, and real and if object is virtual then image forms at `V=-R/3` (in both the cases image is real)
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Knowledge Check

  • The distance of an object from the fouce of a convex mirror of radius curvature 'a' is 'b' The distance of the image from the focus is:

    A
    `b^(2)//4a`
    B
    `a//b^(2)`
    C
    `a^(2)//4b`
    D
    `4b//a^(2)`

  • An object of size 2.0 cm is placed perpendicular to the principal axis of a concave mirror. The distance of the object from the mirror equals the radius of curvature. The size of the image will be

    A
    0.5 cm
    B
    1.0 cm
    C
    1.5 cm
    D
    2.0 cm

  • The minimum sum of the distances of a real object and a real image from a concave mirror of radius of curvature 20cm is:

    A
    10 cm
    B
    40 cm
    C
    20 cm
    D
    none of these

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