ECAT Pre Engineering Physics Chapter 21 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

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Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

00:00
Question # 1

Neutron was discovered by

Question # 2

Three quarks make:

Question # 3

The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called

Question # 4

The counter, which also provides the power to the G.M. tube is called:

Question # 5

The reciprocal of decay constant λ of a radioactive material is:

Question # 6

β-particles are easily deflected by collisions than heavy

Question # 7

When a nucleus emits an alpha particle, it atomic mass decreased by

Question # 8

1 amu is equal to.

Question # 9

Examples of moderators used in a fission reactor is/are:

Question # 10

Which of these is not a radiation detector

Question # 11

The number of all the protons and neutrons in a nucleus is known as

Question # 12

In 1932 Chadwick discovered

Question # 13

Mass of neutron is

Question # 14

The nuclei of an element having the same charge number but different mass numbers are called:

Question # 15

Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The number of isotopes of hydrogen are
A. 2
B. 1
C. 3
D. 4
2 Different radioactive material have
A. same half lives
B. different half lives
C. same mean lives
D. same total lives
3 The rate of decay of a radioactive substance
A. decrease exponentially with time
B. decreases linearly with time
C. increases linearly with time
D. increases exponentially with time
4 Pair production take place when energy ofγ-rays photon is
A. equal to 1.02 Mev-
B. greater than 1.02 Mev
C. less than 1.02 Mev
D. none of these
5 Curie is a unit of
A. reluctance
B. resistivity
C. binding energy
D. radioactivity
6 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23
7 An alpha particle has a charge of
A. +2e
B. -2e
C. -e
D. +3e
8 The amount of energy equivalent to 1 a.m.u is
A. 9.315 Mev
B. 93.15 Mev
C. 931.5 Mev
D. 2.22 Mev
9 γ-rays behave like a particle because they explain the
A. Compton effect
B. Photoelectric effect
C. Pair-production
D. all the above
10 The range ofβ-particle in air is greater than that ofα-particle by
A. 1000 times
B. 100 times
C. 15 times
D. 10 times

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  • alishba rasheed

    alishba rasheed

    03 Mar 2018

    easy mcqs

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