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An observer whose least distance of dist...

An observer whose least distance of distinct vision is 'd' views the his own face in a convex mirror of radius of curvature 'r' .Prove that magnification produced can not exceed `(r )/(d+sqrt(d^(2)+r^(2)) `

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`r/(d+sqrt(d^(2)+r^(2)))`
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An observer whose least distance of distinct vision is'd' views the his own face in a convex mirror of radius of curvature 'r'.Prove that maginification produced can not exceed (r )/(d+sqrt(d^(2)+r^(2))

An observer views his own image in a convex mirror of radius of curvature R. If the least distance of distinct vision for the observer is d, calculate the maximum possible magnification.

Knowledge Check

  • A double convex lens ( R_(1)=R_(2)=10 cm ) having focal length equal to the focal length of a concave mirror. The radius of curvature of the concave mirror

    A
    10 cm
    B
    20 cm
    C
    40 cm
    D
    15 cm

  • The power of a double convex lens of radius of curvature R each is Y. The power of a plano convex lens of same material and of radius of curvature 2R is

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

  • Radius of curvature of a equi convex lens is R. Find focal length ( n = 3/2 )

    A
    `R/2`
    B
    `-R/2`
    C
    R
    D
    -R

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