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

ICS Part 2 Physics
Chapter 19 Test

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Physics ICS Part 2 Chapter 19 Online MCQ's Test

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Question # 1

The emission of electrons from metal surface when exposed to light is called:

Question # 2

The number of electrons emitted depends upon

Question # 3

The unit of Plank's constant 'h' is.

Question # 4

Unit of Stephen's constant is

Question # 5

The dimensions of Plank's constant is same as that of.

Question # 6

The most refined form of matter is:

Question # 7

The Compton effect is associated with

Question # 8

Max planck received noble prize in:

Question # 9

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

Question # 10

In 1905, the special theory of relativity was proposed by

Question # 11

When platinum wire is heated, it changes to cherry red at temperature.

Question # 12

Albert Einstein got noble prize for service in:

Question # 13

In Compton scatting, the value of shift is equal to Compton's wavelength, when X-rays is scattered at the angle of.

Question # 14

Albert Einstein got noble prize in:

Question # 15

When platinum is it becomes orange at.

Question # 16

The mass of an object will be doubled at speed.

Question # 17

Platinum wire becomes white at a temperature of.

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ICS 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 The minimum energy required for occurrence of pair production is:
A. 1.022eV
B. 1.02keV
C. 1.02Me.V
D. 1.04MeV
2 The principle regarding the dual nature of light was first discovered by
A. Heisenberg
B. Compton
C. J.J.Thomson
D. De-Broglie
3 Anti particle of electron is
A. Proton
B. Photon
C. Neutron
D. Positron
4 A positron is an anti particle of.
A. Proton
B. Electron
C. Neutron
D. Photon
5
Question Image
A. Wien's constant
B. Planck's constant
C. Davison constant
D. Lumber's constant
6 The physical quantity related to photon, that does not change in Compton scattering is.
A. Energy
B. Speed
C. Frequency
D. Wavelength
7 Einstein photoelectric equation is
D. None of these
8 Albert Einstein got noble prize in:
A. 1926
B. 1921
C. 1918
D. 1931
9 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
10 If the energy of photon is 10 eV and work function is 5 eV, then the a value of stopping potential will be
A. 50 V
B. 2 V
C. 5 V
D. 15 V

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