MDCAT Physics Chapter 16 MCQ Test With Answer for (Nuclear Physics)

MCQ's Test For MDCAT Physics Chapter 16 Nuclear Physics MCQ's Test

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MDCAT Physics Chapter 16 Nuclear Physics MCQ's Test

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Question # 1

During a negative β-decay

Question # 2

A count rate 240 per minute reduces to 30 counts per min in 1 hour. The half-life of source is:

Question # 3

The half-life of a certain element is 3.5 days at STP. If the temperature is doubled and pressure is reduced to half then half-life of the same element will be:

Question # 4

During a negative β-decayv

Question # 5

The example of nuclear fusion is:

Question # 6

The activity of a radioactive sample is 1.6 curie and half-life is 2.5 days. Its activity after 10 days will be:

Question # 7

When a radioactive nucleus emits a 𝖰 −paritcles, the mass number of the atom:

Question # 8

In nuclear fission reaction, when the products are 140X and 94Sr, the number of neutrons emitted is

Question # 9

When the radioactive nucleus emits a beta particle, the proton neutron ration:

Question # 10

The more readily fissionable isotope of uranium has an atomic mass of:

Question # 11

When a radioactive nucleus remits a beta particle, the proton neutron ratio:

Question # 12

Which row is correct for fission and for fusion?

Question # 13

A thorium nucleus is formed when a uranium nucleus emits an 𝑎 −particles. Atomic number of thorium is :

Question # 14

The uranium Nucleus 𝟐𝟑𝟖 𝑼 undergoes successive decays, emitting respectively 𝑎 − 𝒓𝒂𝒚,𝖰 − 𝒓𝒂𝒚 𝒂𝒏𝒅 − 𝒓𝒂𝒚𝒔. What is the atomic number and atomic mass of the resulting nucleus:

Question # 15

In an 𝑎 −decay:

Question # 16

The fusion of hydrogen into helium is more likely to take place:

Question # 17

Beta particles have less ionizing power than that of alpha particles because:

Question # 18

Due to emission of 𝖰+ − 𝒓𝒂𝒚𝒔:

Question # 19

The most penetrating radiations out of the following is that of

Question # 20

Three quarks make up a:

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MCAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 In an 𝑎 −decay:
A. The parent and daughter nuclei have same number of protons
B. The daughter nucleus has one proton more than parent nucleus
C. The daughter nucleus has two protons less than parent nucleus
D. The daughter nucleus has two neutrons more than parent nucleus
2 The rate of decay radioactive substance:
A. Is constant
B. Decrease exponentially with time
C. Varies inversely with time
D. Decrease linearly with time
3 Nuclear fission experiments show that the neutrons the uranium nuclei into two fragment of about the same size. This process is accompanied by the emission of several:
A. Protons and positrons
B. 𝛼 −partilces
C. neutrons
D. Protons and 𝛼 −partilces
4 For atomic nucleus, the binding energy per nucleon with increase in mass number:
A. Increases continuously
B. Remains same
C. Decrease continuously
D. First increases and then decreases with increase in mass number
5 When a radioactive nucleus remits a beta particle, the proton neutron ratio:
A. Decreases
B. Increases
C. Remain same
D. None of the above
6 The binding energy per nucleon is:
A. Greater for heavy nuclei
B. Least for heavy nuclei
C. Greatest for light nuclei
D. Greatest for medium nuclei
7 Because of large mass when 𝑎 −paricle enters the atom or molecule it:
A. Moves in zigzag path
B. Moves along straight line
C. Moves along circular path
D. None of these
8 During a negative β-decayv
A. An atomic electron is ejected
B. A neutron in the nucleus decays emitting an electron
C. An electron which already present within the nucleus is ejected
D. A part of binding energy of nuclei is converted into electron
9 When a radioactive nucleus emits a 𝖰 −paritcles, the mass number of the atom:
A. Increases by one
B. Decreases by one
C. Remains the same
D. Decreases by four
10 The most penetrating radiations out of the following is that of
A. 𝛾-rays
B. β-rays
C. α-particles
D. X-rays

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  • jaweria

    jaweria

    24 Sep 2019

    please bring some other nuclear mcqs

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