The mass and energy equivalent of 1amu are respectively

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1.67×10⁻²⁷Kg, 930MeV

1.67×10⁻³⁴Kg, 1MeV

1.67×10⁻²⁷Kg, 1MeV

1.67×10⁻²⁷gm, 9.30MeV

answer is B.

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Detailed Solution

1 amu

It has the same mass as a neutral unbound carbon-12 atom in its nuclear and electronic ground state, which is one-twelfth of its total mass.

The mass of one mole of carbon atoms is equal to 12 gms,
$1 amu = \frac{12}{12 \times 6.023 \times 10^{23}} = 1.66 \times 10^{- 27} kg$

Energy-equivalent formula: $E = {mc}^{2} = 1.66 \times 10^{- 27} kg \times {(3 \times 10^{8})}^{2} = 930 MeV$

=930 MeV

Correct answer is B) 1.67×10⁻²⁷Kg, 930MeV

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