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Nuclear Physics: Nature of Emissions

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Questions and Answers

What type of particles are alpha particles?

Neutrons

Protons

Electrons

Helium nuclei (correct)

Under what conditions do alpha emissions typically occur?

When the nucleus has too much energy

In small atoms with low atomic numbers

When the ratio of neutrons to protons is too high

When the ratio of neutrons to protons is too low (correct)

What are beta particles composed of?

Alpha particles

Protons

Electrons (correct)

Neutrons

When does beta particle emission occur?

When the ratio of neutrons to protons is too high Signup and view all the answers

What are gamma rays?

Electromagnetic radiation Signup and view all the answers

When does gamma ray emission typically occur?

When the nucleus has too much energy Signup and view all the answers

Which type of radiation can be easily absorbed by a human hand?

Alpha particles Signup and view all the answers

Which type of radiation will be easily stopped by a concrete block?

Beta particles Signup and view all the answers

What happens when an unstable nucleus emits radiation?

It changes into a more stable nucleus Signup and view all the answers

How many out of 3000 known nuclides are stable?

257 Signup and view all the answers

What is the process called when an unstable nucleus transforms into a more stable nuclide?

Nuclear decay Signup and view all the answers

Which type of radiation has the least ionizing ability?

Gamma 'y' radiation Signup and view all the answers

Which type of radiation can penetrate several centimeters of aluminum?

Gamma 'y' radiation Signup and view all the answers

Among alpha, beta, and gamma radiations, which one ionizes air most strongly?

Alpha 'a' radiation Signup and view all the answers

What is the range of alpha particles in air?

1 meter Signup and view all the answers

Which type of radiation has an infinite range in air?

Beta 'B' radiation Signup and view all the answers

What is the main characteristic that makes alpha particles different from beta and gamma radiations?

Large charge Signup and view all the answers