The time period of a satellite in a circular orbit of the radius R is T . The period of another satellite in…

The time period of a satellite in a circular orbit of the radius R is T. The period of another satellite in a circular orbit of the radius 9R is:
  1. 9T
  2. 27T
  3. 12T
  4. 3T

Solution

T2∝R3.
T'T2=9RR3
 T2=T2×93
 T'=T×33
 T'=27 T

Asked in: JEE Main 2021 (18 Mar Shift 1)

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