TN Phy, Unit - 9, Atomic And Nuclear Physics

                        Welcome To

Class : XII

Subject : Physics

Unit : 9

Unit Name : Atomic And Nuclear Physics

IMPORTANT QUESTIONS

2 Marks

1. What is meant by excitation energy.

2. Define the ionization energy and ionization potential.

3. Define impact parameter.

4. What is mass defect?

5. What is binding energy of a nucleus? Give its expression.

6. Calculate the energy equivalent of 1 atomic mass unit.

7. What is mean life of nucleus? Give the expression.

8. What is meant by activity or decay rate? Give its unit.

9. Define curie.

3 Marks

1. Write the properties of cathode rays.

2. Write down the postulates of Bohr atom model.

3. Derive the energy expression for hydrogen atom using Bohr atom model.

4. What are the properties of nuclear force.

5. Discuss the alpha decay process with example.

6. Discuss the gamma decay process with example.

7. Discuss the properties of neutrino and its role in beta decay.

5 Marks

1. Explain the J.J. Thomson experiment to determine the specific charge of electron.

2. Discuss the spectral series of hydrogen atom.

3. Obtain the law of radioactivity.

4. Obtain an expression for the radius and velocity of the electron in the nth orbit.

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