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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.

Second Year Physics Chapter 19 Online MCQ Test for 2nd Year Physics Chapter 19 Dawn of Modern Physics Preparation

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

FSC Part 2 Physics Ch 19 Test
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Second Year Physics Chapter 19 Online MCQ Test for 2nd Year Physics Chapter 19 Dawn of Modern Physics Preparation

Sr. # Questions Answers Choice
1 De-Broglie waves are associated with
  • A. Moving charged particles only
  • B. Moving neutral particles only
  • C. All moving particles
  • D. All parties whether in motion or at rest
2 The quantity/factor h/m<sub>o</sub>c has the dimensions of.
  • A. Length
  • B. Time
  • C. Mass
  • D. Energy
3 Wave nature of light appears in
  • A. Pair production
  • B. Compton effect
  • C. Photo electric
  • D. Interference
4 Einstein was awarded Nobel prize in physics in
  • A. 1905
  • B. 1911
  • C. 1918
  • D. 1921
5 A perfect absorber must also be perfect
  • A. Cavity
  • B. Sources of radiation
  • C. Radiator
  • D. None of these
6 The concept of direction is purely
  • A. Relative
  • B. Absolute
  • C. Relative to the motion
  • D. None of these
7 Pair production can take place only when energy of radiation is equal and greater than 1.02 MeV, thus correct option is.
  • A. X rays
  • B. Gama rays
  • C. Heat Radiation
  • D. Ultraviolet rays
8 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
9 If an object moves with speed of light, its mass will be.
  • A. Zero
  • B. Maximum
  • C. Minimum
  • D. infinity
10 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

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Share your comments questions here
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  • S

    Sajal

    09 Dec 2017

    Helpful

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  • I

    Intikhab

    11 Aug 2017

    10/17

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  • T

    Tayyab

    30 Apr 2016

    good and very helpful for exam preparation

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