Astronomial telescope has two lenses of focal power 0.5D and 20D. Then its magnifying power is:

An astronomical telescope uses two lenses of power 10 D and 1 D.What is its magnifying power in normal adustment?

(i) Draw a neat labelled ray diagram of an astronomial telescope in normal adjustment . Explain briefly its working . (ii) An astronomical telescope uses two lenses of powers 10 D and 1 D . What is its magnifying power in normal adjustment ?

(i) Draw a neat labelled ray diagram of an astronomial telescope in normal adjustment . Explain briefly its working . (ii) An astronomical telescope uses two lenses of powers 10 D and 1 D . What is its magnifying power in normal adjustment ?

An astronomical telescope uses lenses of power 10 D and 1 D . What is its magnifying power in normal adjustment ?

A telescope consists of two lenses of focal lengths 20 cm and 5 cm . Obtain its magnifying power when final image is (i) at infinity (ii) at 25 cm from the eye.

An astronomical telescope consists of two thin lenses set 36 cm apart and has a magnifying power 8. calculate the focal length of the lenses.

An astronomical telescope consists of two thin lenses set 36 cm apart and has a magnifying power 8. calculate the focal length of the lenses.