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Assertion: The time period of revolution...

Assertion: The time period of revolution of a satellite close to surface of earth is smaller then that revolving away from surface of earth.
Reason: The square of time period of revolution of a satellite is directly proportional to cube of its orbital radius.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are truebut reason is not the correct explanation of assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
A
(a) The time period of satellite, `T prop r^(3//2)`
`or, T prop (R_(e)+h)^(3//2)`
For a satellite revolving close to surface of earth `h~~0`
`:. T prop R_(e)^(3//2)`. It is evident that the period of revolution of a satellite depends upon its height above the earth's surface. Greater is the height of a satellite above the earth's surface, greater is its period of revolution.
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