Question # 1

Which particle has larger range in air.

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Alpha rays

Gama rays

Beta rays

Neutron

The mass of protons is:

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1.675 x 10^-27 kg

1.693 x 10^-27 kg

1.673 x 10^-31 kg

1.673 x 10^-27 kg

Two down and one up quarks make

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Proton

Neutron

~~photon~~

Positron

When a nucleus emits alpha particle its atomic mass decreases by

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1

2

3

4

Which one belongs to lepton's group

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Electron

Muons

Neutrons

All of these

The number of Neutron is²³⁸U₉₂is

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92

238

146

330

Unit of decay constantλ is:

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ms

m^-1

m

S^-1

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

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290 v

400 v

1 kv

None of above

James chadwick discovered:

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Proton

Positron

Neutron

Electron

What is difference is isotopes

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Number of protons

Number of neutrons

Number of electrons

Charge number

Nuclear fission was discovered by:

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Otto Hahn

Friz strassmann

Both a and b

Michaelson

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

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1

2

3

4

Alpha particle carries a charge.

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-e

+2e

-2e

No charge

Materials can be identified by measuring their

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Mass

Half life

Both a and b

None of a,b,c

How many neutrons are there in the nuclide Zn⁶⁶?

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22

30

36

66

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

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Alpha particle

Beta particle

Gama particle

X- rays

The unit of radioactivity is:

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Bequerel

Henry

Pascal

Joule

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Physics ICS Part 2 Chapter 21 Online MCQ's Test MCQs With Answers

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