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A biconvex lens has a radius of curvatur...

A biconvex lens has a radius of curvature of magnitude 20 cm.Which one of the following options describe best the image formed of an object of height 2 cm placed 30 cm from the lens?

A

Real, inverted, height =1 cm

B

Virtual, upright, height -1 cm

C

Virtual, upright, height= 0.5 cm

D

Real, inverted, height = 4 cm

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Knowledge Check

  • The power of a biconvex lens is 10 dioptre and the radius of corvature of each surface is 10 cm . Then the refractive index of the material of the lens is

    A
    `(3)/(2) `
    B
    `(4)/(3)`
    C
    `(9)/(8)`
    D
    `(5)/(3)`

  • Radius of curvature of convex mirror is 40 cm and the size of object is twice as that of image than the image distance is

    A
    10cm
    B
    20cm
    C
    40cm
    D
    30cm

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