Question # 1

Low level radiations effects

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Less of hair

Ulceration

Drop of white blood cells

All

Binding energy for deuteron nucleus is given by

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2.8 MeV

2.23 MeV

2.28 MeV

2.25 MeV

Which of the following basic force is able to provide an attraction between two neutrons:

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Electrostatic and nuclear b

Electrostatic and gravitational

Gravitational and strong nuclear

Only nuclear force

The dead time of G.M tube is.

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10^-1 sec

10^-6sec

10^-4sec

10^-8sec

Which pair belongs to hadrons.

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Protons and Neutrons

Neutrons and electrons

Photons and electrons

positrons and electrons

Unit of decay constantλ is:

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ms

m^-1

m

S^-1

A device that shows the visible path of ionizing particle is called.

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GM counter

Solid state detector

Scalar

Wilson cloud chamber

In Wilson cloud chamber, ß-particles leave

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Thin and continuous tracks

Thick and continuous tracks

No tracks

Thin and discontinuous tracks

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

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1 to 2 eV

3 to 4 eV

6 to 7 eV

8 to 9 eV

If the following particle have the same energy, which particle has the shortest wave length.

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alpha particle

Neutron

Beta particle

Proton

Radioactivity happen due to the disintegration of

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Nucleus

Mass

Electrons

Protons

Cosmic rays consist of

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Protons

High energy photons

Positron

All of above

Electrons are

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Hadrons

Laptons

Quarks

Baryons

Materials can be identified by measuring their

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Mass

Half life

Both a and b

None of a,b,c

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

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Must be different

Must be decreased

Must be increased

Remains same

Number of Isotopes of Neon gas are

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2

3

4

1

For workers in nuclear facilities is, a weekly does of is normally considered safe

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1.0 msv

5.0 msv

2.0 msv

3.0 msv

The total charge of any nucleus is:

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Ze

Z

Both a and b

None of above

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

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