When an astronomical telescope is in normal adjustment, the focal length of the objective lens is 50cm and that of the eyepiece is 2.5om. What is the distance between the lenses?

Similar Questions

An incident ray is reflected normally by a plane mirror onto a screen where it forms a bright spot. ...

An object is placed 36cm from a converging lens of focal length 24cm.If a real image which is 4cm hi...

An air force jet flying with a speed of 335ms-1 went past an anti-aircraft gun. How far is the aircr...

The inside portion of part of a hollow metal sphere of diameter 20cm is polished. The portion will t...

The distance between two successive crests of a water wave is 0.5m. If a particle on the surface of ...

When a girl moves towards a plane mirror at a speed of 4.0m/s, the distance between the girl & h...

Calculate the heat energy required to change 0.1kg of ice at 0oC to water boiling at 100oC. (Specifi...

The diagram above illustrates a meter bridge circuit underbalanced conditions. Determine the value o...

Mechanical energy can be either ...

When current flows through a moving-coil galvanometer, the force exerted on the pointer depends on t...