12th class Physics chapter 19 online mcq test with answers for ICS part 2 Physics Chapter 19 (Dawn of Modern Physics)

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

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Ics Part 2 Physics Chapter 19 Test

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ICS Part 1 English Medium Subjects

ICS Part 1 Urdu Medium Subjects

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

Sr. #	Questions	Answers Choice
1	Wave nature of light appears in	A. Pair production B. Compton effect C. Photo electric D. Interference
2	Compton effect proves.	A. Wave nature of radiation B. Wave nature of particle C. Dual nature of particle D. Particle nature of radiations
3	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
4	Energy of Black body radiation depends upon	A. Nature of surface of body B. Nature of material of body C. Shape and size of body D. Temperature of the body
5	Which one of the following physical quantities change with relativistic speed?	A. Length B. Time C. Mass D. All of above
6	The existence of positron was discovered in:	A. 1929 B. 1928 C. 1931 D. 1933
7	Earth orbital speed is.	A. 10 km/s B. 20 km/s C. 30 km/s D. 40 km/s
8	The minimum frequency needed to emit an electron form metal surface is called:	A. Work function B. Threshold frequency C. Quanta frequency D. All of above
9	The special theory of relativity based on.	A. One postulate B. Two postulates C. Three postulates D. Four postulates
10	Using relativistic effects the location of an air craft after an hour fight can be predicated about	A. 20 m B. 50 m C. 760 m D. 780 m

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