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Three specimens A, B, C of same radioactive element has activities 1 microcurie, 1 rutherford and 1 becquerel respectively. Which specimen has maximum mass?
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A
1 becquerel $=1 \mathrm{dis} / \mathrm{s}$
1 rutherford $=10^{6} \mathrm{dis} / \mathrm{s}$
1 curie $=3.7 \times 10^{10} \mathrm{dis} / \mathrm{s}$
1 rutherford $=10^{6} \mathrm{dis} / \mathrm{s}$
1 curie $=3.7 \times 10^{10} \mathrm{dis} / \mathrm{s}$
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