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The focal length of the objective and ey...

The focal length of the objective and eye piece of a telescope are respectively `100 cm and 2 cm`. The moon subtends and angle of `0.5^@`, the angle subtended by the moon's image will be.

A

`100^(@)`

B

`50^(@)`

C

`25^(@)`

D

`10^(@)`

Text Solution

Verified by Experts

The correct Answer is:
C
m ` = (beta)/(alpha) = (f_(o))/(f_(e))`
`rArr beta = ((100)/(2)) xx 0.5^(@) = 25^(@)` .
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