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 number of electrons emitted depends upon

Question # 2

Potassium Cathodes in photocell emit electrons for a light.

Question # 3

Maximum Compton shift is observed at.

Question # 4

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

Question # 5

If an object moves with speed of light, its mass will be.

Question # 6

The mass of an object will be doubled at speed.

Question # 7

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

Question # 8

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

Question # 9

Number of electros emitted in photo electric effect depend upon.

Question # 10

Wave nature of light appears in

Question # 11

The value of Wien's constant:

Question # 12

When platinum is it becomes orange at.

Question # 13

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

Question # 14

Who explained the photo electric effect.

Question # 15

The converses of annihilation of matter is:

Question # 16

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

Question # 17

The stopping potential for a certain metal is 10 volts. Thus work function for the cathode is.

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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 Pair production cannto take place in vacuum because :
A. Mass in not conserved
B. Momentum is not conserved
C. Energy is not conserved
D. Charge is not conserved
2 Who explained the photo electric effect.
A. Max Plank
B. Einstein
C. Henry
D. Rutherford
3 Photodiode is used for wave nature of.
A. Light
B. Thermal radiation
C. Radi waves
D. Sound waves
4 Compton's effect is associated with
A. gamma rays
B. Beta rays
C. X rays
D. Positive rays
5 Antiparticle of electron is.
A. proton
B. Photon
C. Positron
D. Neutron
6 The position has charge which is in magnitude equal to the charge on
A. Electron
B. Proton
C. β particle
D. All
7 We can never accurately describes all aspects of sbatomic particles simulatanously. It is correct according to:
A. Uncertainity Priciple
B. De-broglie Theory
C. Einstin Theory
D. Photo electric effect
8 Einstein was awarded Nobel prize in physics in
A. 1905
B. 1911
C. 1918
D. 1921
9 The dimensions of Plank's constant is same as that of.
A. Energy
B. Power
C. Acceleration
D. Angular momentum
10 In an nihilation emitted photons moves in opposite directions to conserve.
A. Mass
B. Charge
C. Energy
D. Momentum

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