The focal lengths of eyepiece and objective of a compound microscope are `5cm`and `0.5cm` Its angular magnification for normal adjustment is `-15` .Then the separation in `cm` between eyepiece and objective of the microscope is

The focal length of the objective lens of a compound microscope is

An astronomical telscope has an eyepiece of focal-length 5 cm. If the angular magnification in normal adjustment is 10, the distance between the objective and eyepiece in cm is

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

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.

The focal lengths of the objective and eye - lens of a microscope are 1cm and 5 cm respectively. If the magnifying power for the relaxed eye is 45 , then the length of the tube is

Focal length of objective and eye piece of telescope are 200 cm and 4 cm respectively. What is the length of telescope for normal adjustment?

Lateral magnification of objective of compound microscope is 100 and angular magnification of its eyepiece is 20. The magnifying power of compound microscope is

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 ?

An object is seen through a simple microscope of focal length 20 cm. Find the angular magnification produced, if the image is formed at 30 cm from the lens.

The focal lengths of the objective and the eyepiece of a compound microscope are 2.0cm and 3.0cm, respectively. The distance between the objective and the eyepiece is 15.0cm. Th final image formed by the eyepiece is at infinity. The two lenses are thin. The distance, in cm, of the object and the image produced by the objective, mesured from the objective lens, are respectively.