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Weight of 1 kg becomes 1/6 on moon. If radius of moon is  1.768× 106m , then the mass of moon will be

(a)      1.99×1030 kg                          (b)  7.56×1022  kg

(c)    5.98 ×1024  kg                   (d)   7.65×1022  kg

Answer: d

(5)

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