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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 All motions are
  • A. Absolute
  • B. Uniform
  • C. Relative
  • D. Variable
2 Earth orbital speed is.
  • A. 10 km/s
  • B. 20 km/s
  • C. 30 km/s
  • D. 40 km/s
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 In Compton scatting, the value of shift is equal to Compton's wavelength, when X-rays is scattered at the angle of.
  • A. 90<sup>o</sup>C
  • B. Zero
  • C. 120<sup>o</sup>C
  • D. 45<sup>o</sup>C
5 If an object moves with speed of light, its mass will be.
  • A. Zero
  • B. Maximum
  • C. Minimum
  • D. infinity
6 The unit of work function is
  • A. Electron volt
  • B. Ampere
  • C. Volt cell
  • D. Hz
7 The energy of photon is givne by
  • A. mv2/2
  • B. hf
  • C. Va e
  • D. mac<sup>1</sup>
8 By modern system of NAVSTAR, the speed any where on the earth can be determined to accuracy about.
  • A. 20 ms-1
  • B. 10 ms-1
  • C. 2 cms-1
  • D. 2 ms-1
9 A perfect absorber must also be perfect
  • A. Cavity
  • B. Sources of radiation
  • C. Radiator
  • D. None of these
10 Wave nature of particle was given by:
  • A. Clemensen
  • B. Louis de Broglie
  • C. Laster H. Germer
  • D. Clinton S. Davisson

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