Question

A relay satellite transmits the television programme from one part of the world to another part continuously because its period :

• A. is greater than the period of the earth about its axis
• B. is less than period of rotation of the earth about its axis.
• C. has no relation with the period of rotation of the earth about its axis.
• D. is equal to the period of rotation of the earth about its axis.

Answer 1

The correct option is D is equal to the period of rotation of the earth about its axis.

The time period of revolution of a synchronous satellite is close to 24 hours, which is same as that of Earth's rotation. So, when seen from a point on the equator of Earth, the satellite seems to be stationary.
This is why the satellite is able to transmit signals continuously.