Second Year Physics Chapter 21 Online MCQ Test for 2nd Year Physics Chapter 21 Nuclear Physics Preparation

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Physics FSC Part 2 Chapter 21 Online MCQ's Test

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Question # 1

Controlling rods inserted into the reactor are of metal:

Question # 2

One joule of energy absorbed per kilogram of a body is

Question # 3

A radio active substance has a half life of four months. 3 -fourth of the substance will decay in:

Question # 4

1 amu is equal to

Question # 5

The radioactive decay obeys the law

Question # 6

Charge on an electron was determined by

Question # 7

There is no charge in A and Z of any radioactive element by the emission of.

Question # 8

How many times, the alpha particle is more massive than electrons.

Question # 9

X -rays are similar in nature to.

Question # 10

Mass of meason is

Question # 11

Both xenon and caesium each have:

Question # 12

When a nucleus emits an alpha particle, its atomic mass decreases by

Question # 13

The number of Neutron is 238U92is

Question # 14

The types of quacks are.

Question # 15

Unit of decay constantλ is:

Question # 16

The most useful tracer is.

Question # 17

Two down and one up quarks make

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FSC Part 2 Physics Chapter 21 Online Test MCQ's

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Sr. # Question Answer
1 How many times, the alpha particle is more massive than electrons.

A. 6332

B. 7332

C.8332

D. 9332

2 Charge on an electron was determined by

A. Ampere

B. Millikan

C.Maxwell

D. Bohr

3 A positron is a particle having.

A. Mass equal to electron

B. Charge equal to electron

C.Mass equal to mass of electron but charge opposite to charge of electron.

D. Mass equal to proton

4 The charge number of Ba is.

A. 197

B. 141

C.56

D. 85

5 The scientist who suggested the presence of neutron was:

A. Bohr

B. Rutherford

C.Chadwick

D. J.J Thomson

6 1 gray is equal to.

A. 1 JKg-1

B. 1KgJ-1

C.1JKg

D. 1 JKg-2

7 When nitrogen is bombarded by alpha particles nitrogen nucleus changes into

A. Oxygen

B. Carbon

C.Barium

D. Helium

8 Which one belongs to lepton's group

A. Electron

B.

Muons

C.Neutrons

D. All of these

9 Which of the following is similar to electron.

A. Beta particle

B. Alpha particle

C.Neutron

D. Proton

10 The half life of radioactive elements depends upon

A. Temperature

B. Nature of element

C.Amount of the radioactive substance

D. Pressure

11 The dead time of G.M tube is.

A. 10-1 sec

B. 10-6sec

C.10-4sec

D. 10-8sec

12 The place for soring the nuclear waste is

A. Ocean

B. Damping in earth

C.Damping in desert

D. Bottom of old salt mines

13 Before and after nuclear reaction the number of protons and neutrons:

A. Must be different 

B. Must be decreased

C.Must be increased

D. Remains same

14 In Wilson cloud chamber, ß-particles leave

A. Thin and continuous tracks

B. Thick and continuous tracks

C.No tracks

D. Thin and discontinuous tracks

15 Energy needed to produce an electron hole in solid state detector is.

A. 1 to 2 eV

B. 3 to 4 eV

C.6 to 7 eV

D. 8 to 9 eV

16 Binding energy per nucleus for uranium is above:

A. 6.7 Mev

B. 7.7 Mev

C.6.9 MeV

D. 7.9 MeV

17 Which pair belongs to hadrons.

A. Protons and Neutrons

B. Neutrons and electrons

C.Photons and electrons

D. positrons and electrons

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