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: Â Mass-Energy Equivalent |
Â 60%
From NCERT
AIPMT - 2003
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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: Â Mass-Energy Equivalent |
From NCERT
AIPMT - 2013
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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 $$M(A, Z) = ZM_p + (A-Z)M_n- \dfrac{BE}{c^2}$$ 2 $$M(A, Z) = ZM_p + (A-Z)M_n+ BE$$ 3 $$M(A, Z) = ZM_p + (A-Z)M_n- BE$$ 4 $$M(A, Z) = ZM_p + (A-Z)M_n+ \dfrac{BE}{c^2}$$
Subtopic: Â Mass-Energy Equivalent |
Â 71%
From NCERT
AIPMT - 2008
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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: Â Mass-Energy Equivalent |
Â 62%
From NCERT
NEET - 2020
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The energy required in $$\text{MeV/c}^2$$ to separate $${ }_8^{16} \mathrm{O}$$ into its constituents is:
(Given: mass defect for $${ }_8^{16} \mathrm{O}=0.13691~ \text{amu}$$)
1. $$127.5$$
2. $$120.0$$
3. $$222.0$$
4. $$119.0$$

Subtopic: Â Mass-Energy Equivalent |
Â 68%
From NCERT
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