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Punjab (PTB) · Chapter test · Free

1st Year Physics Chapter 12 TestNuclear and Particle Physics

30 marks · 40 minutes · 21 questions. Covers: CHAP 12: Nuclear and Particle Physics.

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1st Year Physics Chapter 12 Test

1st Year · Physics · Punjab (PTB)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 30Time: 40 minutes

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

  1. The anti-particle of electron is:

    1. Proton

    2. Positron

    3. Neutrino

    4. Anti-proton

  2. Which one of the following is the fundamental particle?

    1. Proton

    2. Neutron

    3. Electron

    4. Meson

  3. Which one of the following radiation/particles has the highest ionization power?

  4. Which type of particle naturally appears in string theory, helping it include gravity?

    1. Proton

    2. Gluon

    3. Graviton

    4. Neutrino

  5. Which of the following particles mediates the electromagnetic forces?

    1. Photon

    2. Gluon

    3. W and Z bosons

    4. Graviton

  6. The force not include in the standard model is:

    1. Gravity

    2. Electromagnetic

    3. Weak nuclear

    4. Strong nuclear

  7. Pair production is a process in which a photon is converted into:

    1. Two protons

    2. A neutron and positron

    3. Two neutrons

    4. An electron and a positron

  8. Which of the following particles is massless?

    1. Neutron

    2. Photon

    3. Electron

    4. Neutrino

  9. The strong nuclear force between the two particles is mediated by:

    1. Gluons

    2. Photon

    3. Mesons

    4. Gravitons

  10. Quarks ara holds together by which fundamental force?

    1. Gravitational force

    2. Weak nuclear force

    3. Electromagnetic force

    4. Strong nuclear force

Q2. Short questions (Attempt any 6 of 8 · 6 × 2 = 12)

  1. What is the effect of beta plus decay on the nucleus?

  2. State the role of Higgs Boson in the generation of mass in modern physics theories.

  3. Is radioactivity affected by temperature or pressure?

  4. Fill in the missing particle or nucleus:(a) (b)

  5. What is the weakest and strongest fundamental force?

  6. Why does beta-decay have a continuous energy spectrum and alpha-decay have a discrete energy spectrum?

  7. How do a proton and a neutron convert to each other?

  8. Identify the element that has 87 nucleons and 50 neutrons.

Q3. Long questions (Attempt any 2 of 3 · 2 × 4 = 8)

  1. Describe four fundamental forces in nature.

  2. What is the difference between matter and anti-matter? Discuss reasons why our universe is almost entirely composed of matter.

  3. Explain the phenomenon of pair annihilation with an example. Explain the utility of its principle in the medical field.