Question

Taking that earth revolves round the sun in
circular orbit of radius 15 x 10m with a time
period of lyear. The time taken by another planet
which is at a distance of 540 x 10m, to revolve
round the sun in circular orbit once will be
1) 216years
2) 144 years
3) 72 years
4) 36years​

Answer 1

Answer:

4) 36years

Explanation:

150m = 1 year

1 m = 1 / 150 year

Therefore, 5400m = 1 / 150 × 5400

= 5400 / 150 = 540 / 15

= 108 / 3 = 36 years.(answer).

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