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19th Chapter

12th Class Physics Chapter 19 Test

Here you can prepare 12th Class Physics Chapter 19 Dawn of Modern Physics Test. Click the button for 100% free full practice test.

2nd Year Physics Chapter 19 Online MCQ Test for 12th Class Physics Chapter 19 (Dawn of Modern Physics)

This online test contains MCQs about following topics:

- Relative Motion
- Frames of Reference
- Special Theory of Relativity
- Black Body Radiation
- Interaction of Electromagnetic Radiation With Matter
- Annihilation of Matter
- Wave Nature of Particles
- Uncertainty Principle

Ics Part 2 Physics Chapter 19 Test
ic

2nd Year Physics Chapter 19 Online MCQ Test for 12th Class Physics Chapter 19 (Dawn of Modern Physics)

Sr. # Questions Answers Choice
1 Light of 4.5 eV is incident on a Cesium surface and stopping potential is 0.25 eV, maximum K.E. of emitted electron is.
  • A. 4.5 eV
  • B. 4.25 eV
  • C. 4.75 eV
  • D. 0.25 eV
2 The materialization of energy take place in the process of.
  • A. Photo electric effect
  • B. Compton Effect
  • C. Pair production
  • D. Annihilationof matter
3 When platinum wire is heated, it changes to cherry red at temperature.
  • A. 500<sup>o</sup>C
  • B. 900<sup>o</sup>C
  • C. 1100<sup>o</sup>C
  • D. 1300<sup>o</sup>C
4 The emission of electrons from metal surface when exposed to light is called:
  • A. Compton effect
  • B. Pair production
  • C. Photoelectric effect
  • D. None of above
5 Albert Einstein got noble prize for service in:
  • A. Pair production
  • B. Annihilation of matter theory
  • C. Compton effect
  • D. Photoelectric effect
6 The special theory of relativity based on.
  • A. One postulate
  • B. Two postulates
  • C. Three postulates
  • D. Four postulates
7 Application of wave like nature of particle is
  • A. Photodiode
  • B. Optical microscope
  • C. Electron microscope
  • D. Compound microscope
8 In 1905, the special theory of relativity was proposed by
  • A. Einstein
  • B. Bohr
  • C. Maxwell
  • D. De Broglie
9 Einstein was awarded Nobel prize in physics in
  • A. 1905
  • B. 1911
  • C. 1918
  • D. 1921
10 In an nihilation emitted photons moves in opposite directions to conserve.
  • A. Mass
  • B. Charge
  • C. Energy
  • D. Momentum

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