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(a) An object of height 2.5 cm is placed...

(a) An object of height 2.5 cm is placed perpendicularly on the principal axis of a concave mirror of focal length f at a distance of `(3)/(4)f`. What will be the nature of the image of the object and its height ?
(b) A person uses spectacles of power +2D. What type of defect of vision is it ?

Answer

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Knowledge Check

  • An object of length 6 cm is placed on the principle axis of a concave mirror of focal length f at a distance of 4 f . The length of the image will be

    A
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    B
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    C
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    D
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    virtual, not magnified
    B
    virtual, magnified
    C
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    D
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