Recommended MCQs - 116 Questions Nuclei Physics NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

If the density of the gold nucleus is

X,

$X,$ then the density of the silver nucleus will be:
1.

2 X

$2X$
2.

\frac{X}{3}

$\frac{X}{3}$
3.

4 X

$4X$
4.

X

$X$

Subtopic: Nucleus |

83%

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Q2:

The volume

(V)

$(V)$ of a nucleus is related to its mass

(M)

$(M)$ as:
1.

V \propto M

$V\propto M$
2.

V \propto \frac{1}{M}

$V\propto \frac{1}{M}$
3.

V \propto M^{3}

$V\propto M^3$
4.

V \propto \frac{1}{M^{3}}

$V\propto \frac{1}{M^3}$

Subtopic: Nucleus |

78%

From NCERT

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Q3:

Two nuclei have their mass numbers in the ratio of $1:3.$ The ratio of their nuclear densities would be:
1. $1:3$
2. $3:1$
3. $(3)^{1/3}:1$
4. $1:1$

Subtopic: Nucleus |

79%

From NCERT

AIPMT - 2008

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Q4:

The stable nucleus that has a radius half of the radius of

{F e}^{56}

$\mathrm{Fe}^{56}$ is:
1.

{L i}^{7}

$\mathrm{Li}^7$
2.

{N a}^{21}

$\mathrm{Na}^{21}$
3.

S^{16}

$\mathrm{S}^{16}$
4.

{C a}^{40}

$\mathrm{Ca}^{40}$

Subtopic: Nucleus |

67%

From NCERT

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Q5:

If the nuclear density of the material of atomic mass

27

$27$ is

3 ρ_{0},

$3\rho _{0},$ then the nuclear density of the material of atomic mass

125

$125$ is:
1.

5 ρ_{0}

$5\rho_0$
2.

3 ρ_{0}

$3\rho_0$
3.

\frac{5}{3} ρ_{0}

$\frac{5}{3}\rho_0$
4.

ρ_{0}

$\rho_0$

Subtopic: Nucleus |

71%

From NCERT

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Q6:

The energy equivalent of one atomic mass unit is:
1.

1.6 \times 10^{- 19} J

$1.6\times 10^{-19}~\text{J}$
2.

6.02 \times 10^{23} J

$6.02\times 10^{23}~\text{J}$
3.

931 MeV

$931~\text{MeV}$
4.

9.31 MeV

$9.31~\text{MeV}$

Subtopic: Mass-Energy Equivalent |

83%

From NCERT

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Q7:

A nuclear reaction along with the masses of the particle taking part in it is as follows;

A + B \to C + D + Q MeV 1.002 u 1.004 u 1.001 u 1.003 u

$~~~~A ~~~~+~~~~~ B~~~~~ \rightarrow~~~~C ~~+~~~~ D~~~+~ ~Q~ ~\text{MeV}\\ \small{1.002~\text u~~~~~~~~ 1.004~\text u ~~~~~~~~~~~1.001~\text u~~~~~~1.003~\text u}$
The energy

Q

$Q$ liberated in the reaction is:
1.

1.234 MeV

$1.234~\text{MeV}$
2.

0.931 MeV

$0.931~\text{MeV}$
3.

0.465 MeV

$0.465~\text{MeV}$
4.

1.862 MeV

$1.862~\text{MeV}$

Subtopic: Mass-Energy Equivalent |

76%

From NCERT

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Q8:

Determine the energy released in the process:

_{1}^{2} H +_{1}^{2} H \to_{2}^{4} H e + Q

${}_{1}^{2}\mathrm{H}+ {}_{1}^{2}\mathrm{H}\rightarrow {}_{2}^{4}\mathrm{He}+Q$
Given:

M (_{1}^{2} H) = 2.01471 amu, M (_{2}^{4} H e) = 4.00388 amu

$M\left({}_{1}^{2}\mathrm{H}\right)= 2.01471~\text{amu}, M\left({}_{2}^{4}\mathrm{He}\right)= 4.00388~\text{amu}$
1.

3.79

$3.79$ MeV
2.

13.79

$13.79$ MeV
3.

0.79

$0.79$ MeV
4.

23.79

$23.79$ MeV

Subtopic: Mass-Energy Equivalent |

72%

From NCERT

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2

3

4

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Q9:

If an electron and a positron annihilate, then the energy released is:
1.

3.2 \times 10^{- 13} J

$3.2\times 10^{-13}~\text{J}$
2.

1.6 \times 10^{- 13} J

$1.6\times 10^{-13}~\text{J}$
3.

4.8 \times 10^{- 13} J

$4.8\times 10^{-13}~\text{J}$
4.

6.4 \times 10^{- 13} J

$6.4\times 10^{-13}~\text{J}$

Subtopic: Mass-Energy Equivalent |

63%

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Q10:

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: Mass-Energy Equivalent |

70%

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