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

FSC Part 2 Physics
Chapter 19 Test

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Physics FSC Part 2 Chapter 19 Online MCQ's Test

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Question # 1

The position has charge which is in magnitude equal to the charge on

Question # 2

Wave nature of light appears in

Question # 3

Which one of the following paved the way for modern physics

Question # 4

The most refined form of matter is:

Question # 5

A perfect absorber must also be perfect

Question # 6

The value of Stefan is constant is:

Question # 7

The unit for Plank's constant is:

Question # 8

Einstein photoelectric equation is

Question # 9

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.

Question # 10

If the energy of photon is 10 eV and work function is 5 eV, then the a value of stopping potential will be

Question # 11

The energy of photon is givne by

Question # 12

The uncertainty principle was given by

Question # 13

The quantity/factor h/moc has the dimensions of.

Question # 14

Potassium Cathodes in photocell emit electrons for a light.

Question # 15

The existence of positron in 1928 was predicted by

Question # 16

Albert Einstein got noble prize in:

Question # 17

The existence of positron was discovered in:

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19th Chapter

FSC Part 2 Physics Chapter 19 Online Test MCQ's

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 1 kg mass will be equivalent to energy.
A. 9 x 108 J
B. 9 X 1012 J
C. 9 X 1016 J
D. 9 X 1019 J
2 The existence of positron was discovered in:
A. 1929
B. 1928
C. 1931
D. 1933
3 The physical quantity related to photon, that does not change in Compton scattering is.
A. Energy
B. Speed
C. Frequency
D. Wavelength
4 The special theory of relativity based on.
A. One postulate
B. Two postulates
C. Three postulates
D. Four postulates
5 Compton shift is maximum for scattering angle of photon
A. 0o
B. 90o
C. 180o
D. 45o
6 The maximum kinetic energy of emitted photo electrons depends upon.
A. The intensity of incident light
B. Frequency of the incident light
C. Metal surface
D. Both frequency of incident light and metal surface.
7 Albert Einstein got noble prize in:
A. 1926
B. 1921
C. 1918
D. 1931
8 Albert Einstein got noble prize for service in:
A. Pair production
B. Annihilation of matter theory
C. Compton effect
D. Photoelectric effect
9 In Compton scatting, the value of shift is equal to Compton's wavelength, when X-rays is scattered at the angle of.
A. 90oC
B. Zero
C. 120oC
D. 45oC
10 When a very high energy modeules such as y radiation interact with matter, the phenomenon arising will be.
A. Photoelectric effect
B. Compton effect
C. Pair production
D. Annihilation of matter

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  • Ali raza

    Ali raza

    09 Dec 2017

    Helpful

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  • Intikhab

    Intikhab

    11 Aug 2017

    10/17

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  • tayyab

    tayyab

    30 Apr 2016

    good and very helpful for exam preparation

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