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Question

The mass and energy equivalent to 1amu are respectively
  1. 1.67×1027gm, 9.30MeV
  2. 1.67×1027kg, 930MeV
  3. 1.67×1034kg, 1MeV
  4. 1.67×1027kg,1MeV

A
1.67×1027gm, 9.30MeV
B
1.67×1027kg, 930MeV
C
1.67×1034kg, 1MeV
D
1.67×1027kg,1MeV
Solution
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1 amu
It is defined as one twelfth of the mass of an unbound neutral atom of carbon-12 in its nuclear and electronic ground state.

Mass of 1 mole C atoms =12gms
1 amu=1212×6.023×1023=1.66×1027kg

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