The energy equivalent of \(0.5\) g of a substance is:
1. \(4.5\times10^{13}\) J
2. \(1.5\times10^{13}\) J
3. \(0.5\times10^{13}\) J
4. \(4.5\times10^{16}\) J

Subtopic:  Mass-Energy Equivalent |
 62%
From NCERT
NEET - 2020
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A certain mass of Hydrogen is changed to Helium by the process of fusion. The mass defect in the fusion reaction is \(0.02866~\text{u}\). The energy liberated per nucleon is: (given \(1~\mathrm{u} = 931~\text{MeV}\) )
1. \(26.7~\text{MeV}\)
2. \(6.675~\text{MeV}\)
3. \(13.35~\text{MeV}\)
4. \(2.67~\text{MeV}\)
Subtopic:  Mass-Energy Equivalent |
From NCERT
AIPMT - 2013
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The power obtained in a reactor using \(\mathrm{U}^{235}\) disintegration is \(1000~\text{kW}\). The mass decay of \(\mathrm{U}^{235}\) per hour is approximately equal to:
1. \(20~\mu\text{g}\)
2. \(40~\mu\text{g}\)
3. \(1~\mu\text{g}\)
4. \(10~\mu\text{g}\)

Subtopic:  Mass-Energy Equivalent |
 66%
From NCERT
AIPMT - 2011
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If \(M(A,~Z)\)\(M_p\), and \(M_n\) denote the masses of the nucleus \(^{A}_{Z}X,\) proton, and neutron respectively in units of \(u\) (\(1~u=931.5~\text{MeV/c}^2\)) and represent its binding energy \((BE)\) in \(\text{MeV}\). Then:

1. \(M(A, Z) = ZM_p + (A-Z)M_n- \frac{BE}{c^2}\)
2. \(M(A, Z) = ZM_p + (A-Z)M_n+ BE\)
3. \(M(A, Z) = ZM_p + (A-Z)M_n- BE\)
4. \(M(A, Z) = ZM_p + (A-Z)M_n+ \frac{BE}{c^2}\)
Subtopic:  Mass-Energy Equivalent |
 71%
From NCERT
AIPMT - 2008
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The volume occupied by an atom is greater than the volume of the nucleus by a factor of about:
1. \(10\)
2. \(10^5\)
3. \(10^{10}\)
4. \(10^{15}\)

Subtopic:  Mass-Energy Equivalent |
 60%
From NCERT
AIPMT - 2003
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Boron has two isotopes B105 and B115. If atomic weight of Boron is 10.81 then ratio of B105 to B115in nature will be: 

1. 15 : 16 

2. 19: 81

3. 81 : 19 

4. 20: 53

Subtopic:  Mass-Energy Equivalent |
 67%
From NCERT
AIPMT - 1998
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