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Q.

How many Me V are equivalent to 1 atomic mass unit (u)


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a

931

b

956

c

898

d

965 

answer is A.

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Detailed Solution

1 a.m.u is 112 th of the mass of an atom of 6c12 isotope.
Let us see in kg
1 a.m.u. = 1.66 × 1027 kg
 According to Einstein, mass energy equivalence
E = m c2
Where, m= mass
 C = speed of light
 E = Energy
 Where, m= 1.66 × 10-27 kg
C= 3 × 108 m/sec
E= 1.49 × 10-10 J ( 1 Mev= 1.6 × 10-13  J )
E= 1.49 × 10-10  J1.6 ×  10-13 Mev
E= 931.25 Mev
 Hence 1 option is correct.
  
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