Find the energy equivalent of one atomic mass unit in joules and in MeV.

Question

Find the energy equivalent of one atomic mass unit in joules and in MeV. (A)  1.66 × 10-10 J , 93.15 : Me V .  (B)  2.5 × 10-10 J , 931.5 : Me V .  (C)  1.5 × 10-10 J , 931.5 : Me V .  (D) 3 × 10-10 J , 9.315 : Me V .

Tardigrade Admin · Accepted Answer

Here, m = 1 u = 1.6605 × 10-27 kg According to Einstein's mass-energy equivalence relation E = mc2 = (1.6605 × 10-27 kg)(2.9979 × 108 m s-1)2 = 1.4924 × 10-10 J = 1.5 × 10-10 J E = ( 1.4924 × 10-10/1.602 × 10-19) eV = 0.9315 × 109 eV = 931.5 × 106 : eV = 931.5: MeV

Q. Find the energy equivalent of one atomic mass unit in joules and in $M e V$ .

$1.66 \times 1 0^{- 10} J, 93.15 M e V .$

$2.5 \times 1 0^{- 10} J, 931.5 M e V .$

$1.5 \times 1 0^{- 10} J, 931.5 M e V .$

$3 \times 1 0^{- 10} J, 9.315 M e V .$

Q. Find the energy equivalent of one atomic mass unit in joules and in MeV.

1.66×10−10J,93.15MeV.

2.5×10−10J,931.5MeV.

1.5×10−10J,931.5MeV.

3×10−10J,9.315MeV.

Here, m=1u=1.6605×10−27kg According to Einstein's mass-energy equivalence relation E=mc2 =(1.6605×10−27kg)(2.9979×108ms−1)2 =1.4924×10−10J=1.5×10−10J E=1.602×10−191.4924×10−10​eV =0.9315×109eV=931.5×106eV=931.5MeV

Q. Find the energy equivalent of one atomic mass unit in joules and in $M e V$ .

$1.66 \times 1 0^{- 10} J, 93.15 M e V .$

$2.5 \times 1 0^{- 10} J, 931.5 M e V .$

$1.5 \times 1 0^{- 10} J, 931.5 M e V .$

$3 \times 1 0^{- 10} J, 9.315 M e V .$