Question # 1

The binding energy per nucleon is maximum for

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Helium

Iron

Potassium

Radium

One joule of energy absorbed per kilogram of a body is

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Roentgen

Grey

Rem

Curie

Curie is unit of.

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Conductivity

Binding energy

Radioactivity

Resistivity

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

When nitrogen is bombarded by alpha particles nitrogen nucleus changes into

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Oxygen

Carbon

Barium

Helium

X -rays are similar in nature to.

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Gama rays

Beta rays

Alpha rays

Cathode rays

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 energy of photon for photoelectric effect is less than

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1 MeV

2 MeV

5 MeV

8 MeV

What is difference is isotopes

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Number of protons

Number of neutrons

Number of electrons

Charge number

James chadwick discovered:

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Proton

Positron

Neutron

Electron

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

The charge on Beta particle is

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+e

-e

-2e

None of these

The particles which do not experience strong force are called.

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Baryons

Hadrons

Mesons

Laptons

The dead time of G.M tube is.

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10^-1 sec

10^-6sec

10^-4sec

10^-8sec

1 gray is equal to.

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1 JKg-1

1KgJ-1

1JKg

1 JKg-2

The SI unit of decay constant is

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m

m^-1

S^-1

Nm^-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

A proton consists of quarks which are.

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Two up, one down

One up, two down

All up

All down

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