If the telescope is reversed .i.e., seen seen from the objective side, then

The motion of a projectile as seen from other projectile is

If an object is placed at the centre of a glass sphere and it is seen from outside, then prove that its virtual image is also formed at centre.

If an object is placed at the centre of a glass sphere and it is seen from outside, then prove that its virtual image is also formed at centre.

Diameter of objective of a telescope is 10 cm Its distance from two different objects is 1 km If wavelength of light is 5000 Å, then at wha minimum distance, these objects are clearl seen by telescope ?

If an object is thrown at an angle of 60^(@) with horizontal, find elevation angle of the object at its highest point as seen from the point of projection.