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An astronomical refractive telescope has...

An astronomical refractive telescope has an objective of focal length `20 m` and an eyepiece of focal length `2 cm`.Then the magnification

A

The length of the telescope tube is 20.2 m

B

The magnification is 1000

C

The image formed is inverted

D

An objective of a larger aperture will increase the brightness and reduce chromatic aberration of the image

Text Solution

AI Generated Solution

To find the magnification of an astronomical refractive telescope, we can use the formula for magnification (M) given by: \[ M = \frac{F_o}{F_e} \] where: - \( F_o \) is the focal length of the objective lens, - \( F_e \) is the focal length of the eyepiece lens. ...
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