Taking that earth revolves round Sun in a circular orbit of radius 15xx10^(10)m, with a time period of 1 year, the time taken by another planet, which is at a distance of 540xx10^(10)m, to revolve round the Sun in circular orbit once, will be:

Taking that earth revolves round Sun in a circular orbit of radius 15x

1.	Taking that earth revolves round Sun in a circular orbit of radius 15xx10^(10)m, with a time period of 1 year, the time taken by another planet, which is at a distance of 540xx10^(10)m, to revolve round the Sun in circular orbit once, will be:
Answer» 216 YEARS 144 years 72 years 36 years Solution :Apply Kepler.s LAW `(T_(2)^(2))/(T_(2)^(2))=((R_(1))/(R_(2)))^(3)` Thus correct choice is (a).

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Taking that earth revolves round Sun in a circular orbit of radius 15xx10^(10)m, with a time period of 1 year, the time taken by another planet, which is at a distance of 540xx10^(10)m, to revolve round the Sun in circular orbit once, will be:

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