Question # 1

Controlling rods inserted into the reactor are of metal:

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Aluminium

Cadmium

Magnesium

Copper

Which one belongs to lepton's group

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Electron

Muons

Neutrons

All of these

Charge on an electron was determined by

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Ampere

Millikan

Maxwell

Bohr

The mass of proton in amu is:

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1.07276

1.7276

1.007276

1.0007276

The scientist who suggested the presence of neutron was:

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Bohr

Rutherford

Chadwick

J.J Thomson

The energy of photon for photoelectric effect is less than

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1 MeV

2 MeV

5 MeV

8 MeV

Which pair belongs to hadrons.

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Protons and Neutrons

Neutrons and electrons

Photons and electrons

positrons and electrons

The reciprocal of decay construct lamda of a radioactive element is.

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Half life

Mean life

Curie

total life

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

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1

2

3

4

The most useful tracer is.

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Strontium -90

Iodine -31

Cobalt -60

Carbon -14

Electrons are

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Hadrons

Laptons

Quarks

Baryons

The first atomic reactor was introduced by

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Currie

Enrico Fermi

Newton

Bohr

The energy equivalent of 1 kg of matter is about:

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10^-15 J

1 J

10^-12J

10^-17J

A pair of quark and anti quark makes a.

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Meason

harden

Lapton

Baryon

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

When nitrogen is bombarded by alpha particles nitrogen nucleus changes into

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Oxygen

Carbon

Barium

Helium

Two down and one up quarks make

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Proton

Neutron

~~photon~~

Positron

Which of the following is similar to electron.

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Beta particle

Alpha particle

Neutron

Proton

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

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