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If fo and fe are the focal lengths of th...

If `f_o` and `f_e` are the focal lengths of the objective lens and eye-piece lens respectively for a telescope, the length of telescope in normal adjustment is

A

`|f_o|-|f_e|`

B

`2|f_e|-|f_o|`

C

`|f_o|+|f_e|`

D

`2sqrt(|f_o||f_e|)`

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH INSTITUTE ENGLISH-Mock Test 36-Example
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  10. Select the correct option

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  17. Huygen's principle allows us to determine,

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