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 most refined form of matter is:

Question # 2

In 1905, the special theory of relativity was proposed by

Question # 3

The number of electrons emitted depends upon

Question # 4

Minimum energy needed to escape an electron  ofrm metal surface is called:

Question # 5

Compton effect proves.

Question # 6

Anti particle of electron is

Question # 7

Which one of the following paved the way for modern physics

Question # 8

The existence of positron in 1928 was predicted by

Question # 9

Earth orbital speed is.

Question # 10

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

Question # 11

The photoelectric effect predicts that light is made of

Question # 12

The energy of photon is givne by

Question # 13

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

Question # 14

The special theory of relativity based on.

Question # 15

Photodiode is used for wave nature of.

Question # 16

Pair production occurs only when energy of photon is at least equal in:

Question # 17

All motions are

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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 Max planck received noble prize in:
A. 1927
B. 1932
C. 1918
D. 1914
2 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
3 unit of Plank's constant is same as that of.
A. Acceleration
B. Angular momentum
C. Linear momentum
D. Entropy
4 In an nihilation emitted photons moves in opposite directions to conserve.
A. Mass
B. Charge
C. Energy
D. Momentum
5 If an object moves with speed of light, its mass will be.
A. Zero
B. Maximum
C. Minimum
D. infinity
6 Potassium Cathodes in photocell emit electrons for a light.
A. Visible
B. Infra red
C. Ultra violet
D. X rays
7 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
8 Antiparticle of electron is.
A. proton
B. Photon
C. Positron
D. Neutron
9 All motions are
A. Absolute
B. Uniform
C. Relative
D. Variable
10 Maximum Compton shift is observed at.
A. 30oC
B. 90oC
C. 45oC
D. 180oC

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