ECAT Pre Computer Science Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

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

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ECAT Physics Chapter 21 Nuclear Physics

00:00
Question # 1

Binding energy per nucleus is

Question # 2

1 amu is equal to

Question # 3

In wilson cloud chamber, the air becomes saturated with:

Question # 4

The isotope/s of hydrogen is /are:

Question # 5

If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by

Question # 6

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

Question # 7

1 amu is equal to.

Question # 8

Neutrons are

Question # 9

The penetration power ofβ-particle is

Question # 10

The diameter of an atom is of the order

Question # 11

Neon gas have three isotopes whose atomic numbers are

Question # 12

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

Question # 13

Fraction of the decaying atoms per unit time is called

Question # 14

Radioactivity was discovered by:

Question # 15

A mass spectrograph sort out

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year
2 In radioactive decay, the new element which is formed due to the disintegration of original element is called
A. element
B. daughter element
C. parent element
D. none of these
3 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
4 The energy is found from Einstein's mass energy relation is called
A. binding energy of electron
B. binding energy of proton
C. binding energy of neutron
D. binding energy of nucleus
5 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
6 If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be
A. Equal to 1
B. Less than 1
C. Greater than 1
D. Infinity
7 γ-rays behave like a particle because they explain the
A. Compton effect
B. Photoelectric effect
C. Pair-production
D. all the above
8 Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:
A. 50
B. 100
C. 150
D. 200
9 For an atom having atomic number Z and atomic weight A, the number of electron in an atoms
A. A - Z
B. A + Z
C. Z
D. A
10 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life

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