Question # 1

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

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

X -rays are similar in nature to.

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Gama rays

Beta rays

Alpha rays

Cathode rays

The place for soring the nuclear waste is

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Ocean

Damping in earth

Damping in desert

Bottom of old salt mines

The first atomic reactor was introduced by

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Currie

Enrico Fermi

Newton

Bohr

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

Binding energy per nucleus for uranium is above:

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6.7 Mev

7.7 Mev

6.9 MeV

7.9 MeV

The mass of beta particle is equal to the mass

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Proton

Neutron

Electron

Photon

The mass of beta particle is equal to mass of.

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Protons

Electrons

Neutrons

Boron

A positron is a particle having.

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Mass equal to electron

Charge equal to electron

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

Mass equal to proton

Absorbed Dose 'D' is defined as

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m/E

E/C

C/m

E/m

The radio active nuclide ₈₆Ra²²⁸ decays by a series of emissions of three alpha particles and one beta particle. The nuclide X finally formed is:

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₆₄X²²⁰

₈₆X²²²

₈₄X²¹⁶

₈₈X²¹⁵

Circulation of blood is studied by radio isotope.

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Cobalt -60

Phosphorus -32

Sodium -24

Iodine -131

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

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6 months

8 months

12 months

16 months

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

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Half life

Mean life

Curie

total life

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

Curie is unit of.

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Conductivity

Binding energy

Radioactivity

Resistivity

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

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

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6332

7332

8332

9332

Nuclear fission chain reaction is controlled by using.

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Cadmium rods

Iron rods

Platinum rods

Steel rods

Nuclear fission was discovered by:

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Otto Hahn

Friz strassmann

Both a and b

Michaelson

What is difference is isotopes

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Number of protons

Number of neutrons

Number of electrons

Charge number

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