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-decayv

Question # 2

The particles equal in mass or greater than mass of protons are called:

Question # 3

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

Question # 4

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

Question # 5

Due to emission of 𝖰+ − 𝒓𝒂𝒚𝒔:

Question # 6

The most penetrating radiations out of the following is that of

Question # 7

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 # 8

During a negative β-decay

Question # 9

The number of electrons in a nucleus X of atomic number Z and mass number A is:

Question # 10

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

Question # 11

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

Question # 12

Half-life of radon gas is:

Question # 13

𝑎, 𝖰 𝒂𝒏𝒅 radiations come out of radioactive substance:

Question # 14

The rate of decay radioactive substance:

Question # 15

The phenomenon of radioactivity is associated with:

Question # 16

If the radioactive substance reduces to 𝟏 𝟏𝟔 PHYSICS of its original mass in 40 days then its half-life is:

Question # 17

The half-life of a radioactive element which has only 1//32 of its original mass left after a lapse of 60 days is:

Question # 18

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

Question # 19

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

Question # 20

A radioactive substance has a half-life of 4 months. Three-fourths of the substance will decay in:

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MCAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 The example of nuclear fusion is:
A. Formation of barium and krypton from uranium
B. Formation of plutonium -235 from uranium -235
C. Formation of helium from hydrogen
D. Formation of water from hydrogen and oxygen
2 Half-life of radon gas is:
A. 1620 years
B. 3.8 days
C. 7 days
D. 11 days
3 The number of electrons in a nucleus X of atomic number Z and mass number A is:
A. A
B. W
C. Z
D. Y
4 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
5 If the radioactive substance reduces to 𝟏 𝟏𝟔 PHYSICS of its original mass in 40 days then its half-life is:
A. 10days
B. 20days
C. 40days
D. 4days
6 When the radioactive nucleus emits a beta particle, the proton neutron ration:
A. increases by one
B. Remains same
C. Decreases by one
D. Decreases by four
7 A thorium nucleus is formed when a uranium nucleus emits an 𝑎 −particles. Atomic number of thorium is :
A. 23
B. 60
C. 90
D. 70
8 The half-life of a radioactive element which has only 1//32 of its original mass left after a lapse of 60 days is:
A. 12days
B. 10days
C. 22days
D. 36days
9 Three quarks make up a:
A. Leptons
B. Mesons
C. Baryons
D. Quark
10 Beta particles have penetration of about:
A. 100 times more than that of the gamma particles
B. 100 times less than that of an alpha ray
C. 100 times more than that of an alpha ray
D. 10 times more than that of an alpha particle

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