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 quantity/factor h/moc has the dimensions of.

Question # 2

Compton's effect is associated with

Question # 3

Compton shift is maximum for scattering angle of photon

Question # 4

All motions are

Question # 5

We can never accurately describes all aspects of sbatomic particles simulatanously. It is correct according to:

Question # 6

The energy of photon is givne by

Question # 7

Earth orbital speed is.

Question # 8

The photon with energy greater than 1.02 MeV can interact with matter as.

Question # 9

When platinum is heated is become dull red at:

Question # 10

When platinum is it becomes orange at.

Question # 11

The special theory of relativity based on.

Question # 12

The minimum frequency needed to emit an electron form metal surface is called:

Question # 13

An electron miroscope emplys which to one of the following particles?

Question # 14

In an nihilation emitted photons moves in opposite directions to conserve.

Question # 15

The Compton effect is associated with

Question # 16

In the equation if f2 > then

Question # 17

Joule second is the unit 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 unit of Plank's constant is same as that of.
A. Acceleration
B. Angular momentum
C. Linear momentum
D. Entropy
2 Which is the most refined form of matter.
A. Smoke
B. Fog
C. Light
D. Electron
3 Disintegration of photon on striking a nucleus into an electron and positron is known as.
A. Annihilation of matter
B. Compton effect
C. Pair production
D. Photo electric effect
4 In an nihilation emitted photons moves in opposite directions to conserve.
A. Mass
B. Charge
C. Energy
D. Momentum
5 In 1905, the special theory of relativity was proposed by
A. Einstein
B. Bohr
C. Maxwell
D. De Broglie
6 The uncertainty principle was given by
A. De-Broglie
B. Heisenberg
C. Einstein
D. Max Planck
7 The emission of electrons from metal surface when exposed to light is called:
A. Compton effect
B. Pair production
C. Photoelectric effect
D. None of above
8 The unit of work function is
A. Electron volt
B. Ampere
C. Volt cell
D. Hz
9 The stopping potential for a certain metal is 10 volts. Thus work function for the cathode is.
A. 10 J
B. 1.6 X 10-18 J
C. 1.6 X 10-19 J
D. 1.6 X 1030 J
10 The materialization of energy take place in the process of.
A. Photo electric effect
B. Compton Effect
C. Pair production
D. Annihilationof matter

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