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Write the expression for magnifying powe...

Write the expression for magnifying power of a telescope in terms of focal lengths.

Text Solution

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The correct Answer is:
`m = ( f_(0))/( f_(e ))`
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Knowledge Check

  • The power of a concave lens of focal length 50 cm is :

    A
    `+2D`
    B
    `+0.02 D`
    C
    `-0.02 D`
    D
    `-2 D`

  • The power of a concave lens of focal length 50 cm is :

    A
    `+2D`
    B
    `+0.02 D`
    C
    `-0.02 D`
    D
    `-2 D`

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    Write the expression for de-Broglie wave length of electrons in terms of electric potential and explain the terms used.

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