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12. Two neutrons of mass 1.67 x 1027 kg are atdistance of 10-15 m from each other. Thegravitational force of attraction betweenthem is:(a) 4.86 x 10 34 N (b) 5.86 x 10 34 N(c) 1.86 x 1034 N (d) 2.86 x 10-34 N

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