Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to he in such an orbit when : 1. The orbit is geosynchronous. 2. The orbit is circular. 3. The orbit lies in the plane of the Earth's equator. 4. The orbit is at an altitude of 22,236 km. Select the correct answer using the codes given below :

Consider the following statements: I. Without the atmosphere, temperature would be well below freezing point everywhere on the Earth's surface. II. Heat absorbed and trapped by the atmosphere maintai…

Consider the following statements: Statement I: In the context of effect of water on rocks, chalk is known as a very permeable rock whereas clay is known as quite an impermeable or least permeable ro…

Satellite is kept moving in its orbit around the Earth; it is due to –

An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Earth

If the gravitational force of the earth suddenly disappears, which are of the following will be the correct consequence?