Mass of moon is 7.34 x 1022 kg. If the acceleration due to gravity on the moon is 1.4 m/s2, the radius of the moon is (G = 6.667×10-11 Nm2/kg2)

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0.56×104m

1.87×106m

1.92×106 m

1.01×108 m

answer is B.

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Detailed Solution

We know g = GMR2 R = GMg = 6.67×10-11×7.34×10221.4 = 1.87 ×106 m

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