2nd Year Physics Chapter 21 Online MCQ Test for 12th Class Physics Chapter 21 (Nuclear Physics)

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Physics ICS Part 2 Chapter 21 Online MCQ's Test

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Question # 1

The number of neutrons in Li are

Question # 2

amu =

Question # 3

The early Greeks believed that matter waves was

Question # 4

Which of the following are not hadrons.

Question # 5

Materials can be identified by measuring their

Question # 6

GM counter uses

Question # 7

The number of Isotopes of cesium are.

Question # 8

Two down and one up quarks make

Question # 9

How many neutrons are there in the nuclide Zn66?

Question # 10

The number of protons in any atom are always equal to the number of

Question # 11

The potential difference between the top and bottom of a cloud chamber is of the order of

Question # 12

A proton consists of quarks which are.

Question # 13

Which one of the following is not affected by electric or magnetic field.

Question # 14

X -rays are similar in nature to.

Question # 15

Half life of Uranium -239 is

Question # 16

The energy of photon for photoelectric effect is less than

Question # 17

The energy equivalent of 1 kg of matter is about:

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 One joule of energy absorbed per kilogram of a body is
A. Roentgen
B. Grey
C. Rem
D. Curie
2 The mass of protons is:
A. 1.675 x 10-27 kg
B. 1.693 x 10-27 kg
C. 1.673 x 10-31 kg
D. 1.673 x 10-27 kg 
3 The SI unit of decay constant is
A. m
B. m-1
C. S-1
D. Nm-1
4 Controlling rods inserted into the reactor are of metal:
A. Aluminium
B. Cadmium
C. Magnesium 
D. Copper
5 Gamma radiations are emitted due to:
A. De-excitation of atom
B. De-excitation of nucleus
C. Excitation of atom
D. Excitation of nucleus
6 Hydrogen bomb is an example of.
A. Nuclear fission
B. Nuclear fusion
C. Chain reaction
D. Chemical reaction
7 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
8 Those elements whose charge number z is greater then __________ are unstable:
A. 80 
B. 79
C. 82
D. 83
9 James chadwick discovered:
A. Proton
B. Positron
C. Neutron
D. Electron
10 What is difference is isotopes
A. Number of protons
B. Number of neutrons
C. Number of electrons
D. Charge number

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