(a) For the telescope described what is the separation between the objective lens and eye piece ?
(b) If this telescope is used to view a `100 m` tall tower `3 km` away, what is the height of the image of the tower formed by the objective lens ?
(c ) What is the height of the final image of the tower if it is formed at 25 cm` ?

You are given two converging lenses of focal lengths 1.25 cm and 5cm to design a compaound microscope.if it is desired to have a magnification of 30, find out the separation between the object and the eyepiece. or A small telescope has an objective lens of focal length 150 cm and eyepiece of focal length 5 cm. What is the magnifying of the telescope for viewing distant objects on normal adjustment ? If this telescope is used to view a 100 m tall tower 3 km away, what is the height of the image of the tower formed 3km away, what is the height of the image of the tower formed by the objective lens ?

A telescope has an objective lens of focal length 200cm and an eye piece with focal length 2cm . If this telescope is used to see a 50 meter tall building at a distance of 2km, what is the height of the image of the building formed by the objective lens?

A small telescope has an objective lens of focal length 150 cm and and eye piece of focal length 5 cm . If his telescope is used to view a 100 m high tower 3 km away, find the height of the final image when it is formed 25 cm away from the eye piece.

What is the distance between objective and eye lens of telescope in normal adjustment ?

The image formed by an objective of a telescope is-