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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
    • RESONANCE-GEOMETRICAL OPTICS-Exercise
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    2. Two plane mirrors are inclined at 70^@. A ray incident on one mirror a...

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    3. A person AB of height 170 cm is standing in front of a plane mirror. H...

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    4. The figure shows two parallel plane mirrors placed 10cm apart. An obje...

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    5. A luminous point object is moving along the principal axis of a concav...

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    6. AB is an incident beam of light and CD is a reflected beam (the number...

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    7. The relative refractive index of glass with respect to a material is 0...

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    8. In the figure shown sin i/sin r is equal to

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    9. The critical angle for light going from medium X into medium Y is thet...

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    10. A transparent cylinder has its right half polished so as to act as a m...

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    13. A ray of light is incident at an angle of incidence 45^@ on an equilat...

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    14. One half of a convex lens is covered with a black paper. Will this len...

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    16. In the figure shown an object O is placed in front of a thin lens of s...

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