Question

In a refracting-type astronomical telescope the focal of the object is ------ then the focal length of the eyepiece.

1)more

2)less

very easy question ans it​

Answer 1

Hey There,

In a refracting-type astronomical telescope the focal of the objective lens is greater than the focal length of the eyepiece.

Because we need a large positive magnification in a telescope, and for magnification of telescope we have,

m= Fo/Fe.

Answer is 1). More.

Hope it helps...

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