UNIT III RADIOACTIVITY

Beta particle mass equal to that of an _____.

When the nucleon shifts from the neutron quantum state to the proton quantum state, ____are emitted.

• electron and antineutrino

• electron and neutrino

• positron and antineutrino

• electron and neutrino

Beta particle leave the nucleus at a speed of _____.

• 270000 km/sec

• 320000 km/sec

• 270000 m/sec

• 320000 m/sec

Which plate is affected by beta decay?

• Holographic plate

• photographic plate

• metal plate

• graphite plate

The charge to mass ratio (e/m) of beta particles is the same as that for _______.

• Neutrons

• Electrons

• Positrons

• Protons

What is the internal conversion process?

• Conversion of energy within a molecule

• Conversion of energy between different forms

• Conversion of energy within an atomic nucleus

• Conversion of energy within a biological system

In Kaufmann's experiment, what field produced a deflection in a direction perpendicular to that due to the electric field?

• Magnetic field

• Electric field

• Gravitational field

• Nuclear field

Internal conversion is a competing process to:

• Alpha decay

• Beta decay

• Gamma decay

• Electron capture

Beta particles are identical with ____________.

• Positrons

• Protons

• Neutrons

• Electrons

In Giger-Nuttall law, which type of decay process does it primarily apply to?

• Alpha decay

• Beta decay

• Gamma decay

• Electron capture