The focal length of the objectives and the eyepiece of an astronomical telescope are `60 cm` and `5 cm` respectively .Calculate the magnifying power and the length of the telescope when the final image is formed at (i)infinity, (ii) least distance of distinct vision`(25cm)`

The focal lengths of the objective and the eye piece of an astronomical telescope are 60 cm and 5 cm respectively. Calculate the magnifying power and the length of the telescope when the final image is formed at (i) infinity, (ii) least distance of distinct vision (25 cm)

The focal length of the objectives and the eyepiece of an astronomical telescope are 60cm and 5cm respectively .Calculate the magnifying power and the length of the telescope when the final image is formed at(i)infinity,(ii)least distance of distinct vision (25cm)

The focal length of the objectives and the eyepiece of an astronomical telescope are 16cm and 2cm respectively .A planet is viewed with its help ,then

The focal length of objecive and eye-piece of astronomical telescope are 2 m and 5 cm respectively. The magnifying power of telescop when final image is formed at infinity is

A telescope has objective and eyepiece lenses of focal lengths 150 cm and 5 cm, respectively. Calculate the magnifying power of telescope when the final image is formed (a) at infinity and (b) at the least distance of clear vision.

The focal lengths of the eyepiece and the objective of an astronimical telescope are 2 cm and 100 cm respectively. The magnifying power of the telescope for normal adjustment and the length of the telescope is

The focal lengths of the objective and the eyepiece of an astronomical telescope are 40 cm and 5 cm respectively. It is focussed on a scale at a distance of 2 m. The final image is formed at infinity. What is the separation between the two lenses ?

The focal lengths of the eye piece and objective of a compound microscope are 5 cm and 1 cm respectively, and the length of the tube is 20 cm . Calculate magnifying power of microscope when the final image is formed at inifinity. The least distance of distinct cision is 25 cm .

The focal length of the objective and eye piece of a telescope are respectively 60 cm and 10 cm . The magnitude of the magnifying power when the image is formed at infinity is

The focal lengths of the objective and eyepiece of a telescope are 60 cm and 5 cm respectively. Find as magnifying power (P) for normal adjustment and when the image forms at near point.