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.

Draw views of solid as seen from all the directions.

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 ?