1.

Taking that earth revolves round the sun ina circular orbit of radius 15xx10^10 m, with a time period 1 yr the time taken by another planet , which is at a distance of 540 xx 10^10 m, to revolve rounnd the sun in circular orbit once , will be

Answer»

216 YEARS
144 years
72 years
36 years

ANSWER :A


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