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3 December, 21:07

A galilean telescope adjusted for a relaxed eye is 36cm long. If the objective lens has a focal length of 40cm, what is the magnification?

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  1. 4 December, 00:39
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    For this problem, we use the mirror equation which is expressed as:

    1/di + 1/f = 1/d0

    Magnification is expressed as the ratio of di and d0.

    Manipulating the equation, we will have:

    M = di/f + 1

    M = 36/40 + 1

    M = 1.9

    Hope this answers the equation.
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