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How does magnifying power change with ch...

How does magnifying power change with change in length of tube for a given telescope ?

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In case of a microscope, magnifying power
`|m| = (v_0)/(u_0) xx (d)/(u_e)`, where `L = v_0 + u_e`
When `L` is increased, `u_e` increase as `v_0` is fixed.
`:. |m|` will decrease.
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