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Let us consider simple microscope of a concave lens of power -10D and a convex lens of power +30D in contact. If the image is formed at infinity, what is the magnifying power of the microscope ? Consider distance of the distinct vision as 25cm.

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A simple microscope consists of a concave lens of power of - 10 D and a convex lens of power + 30 D in contact. If the image formed is at infinity, what is the magnifying power of microscope ? Take distance of distinct vision = 25 cm .

A simple microscope consists of a concave lens of power -10D and convex lens of power +20D in contact. If the image formed at infinity, then calculate the magnifying power (D=25cm )

Knowledge Check

  • A simple microscope consists of a concave lens of power - 10 D and a convex lens of power + 20 D in contact. If the image formed at infinity, then calculate the magnifying power (D = 25 cm)

    A
    `2.5`
    B
    `3.5`
    C
    `2.0`
    D
    `3.0`

  • A simple microscope consists of a concave lens of power - 10 D and a convex lens ef power + 20 D in contact. If the image formed at infinity, then calculate the magnifying power (D=25 cm)

    A
    `2.5`
    B
    `3.5`
    C
    `2.0`
    D
    `3.0`

  • When the final image is formed at infinity the magnifying power of compound microscope is (using new Cartesian sign conventions)

    A
    `-((v_(o))/(u_(o)))((D)/(f_(e))+1)`
    B
    `-((v_(o))/(u_(o)))((D)/(f_(e)))`
    C
    `-((u_(o))/(v_(o)))((D)/(f_(e))-1)`
    D
    `-((u_(o))/(v_(o)))((D)/(f_(e)))`

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