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

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

Question # 2

Einstein was awarded Nobel prize in physics in

Question # 3

Internal frame is a frame is which

Question # 4

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

Question # 5

Earth orbital speed is.

Question # 6

Which one of the following paved the way for modern physics

Question # 7

Photodiode is used for wave nature of.

Question # 8

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

Question # 9

In Compton effect the photon behaves as a.

Question # 10

Wave nature of particle was given by:

Question # 11

Compton's effect is associated with

Question # 12

Albert Einstein got noble prize for service in:

Question # 13

The maximum kinetic energy of emitted photo electrons depends upon.

Question # 14

A block body is an ideal:

Question # 15

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

Question # 16

The numerical value of Compton wavelength is equal to

Question # 17

Unit of Stephen's constant 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 Which one of the following physical quantities change with relativistic speed?
A. Length
B. Time
C. Mass
D. All of above
2 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
3 The unit of Plank's constant 'h' is.
A. JC
B. J/C
C. JS
D. J/S
4 The converses of annihilation of matter is:
A. Photoelectric effect
B. Relativistic effect
C. Pair production
D. Compton effect
5 Anti particle of electron is
A. Proton
B. Photon
C. Neutron
D. Positron
6 Number of electros emitted in photo electric effect depend upon.
A. Intensity of incident light
B. Frequency of incident light
C. Energy of incident light
D. Wavelength of incident of light
7 Potassium Cathodes in photocell emit electrons for a light.
A. Visible
B. Infra red
C. Ultra violet
D. X rays
8 Compton's effect is associated with
A. gamma rays
B. Beta rays
C. X rays
D. Positive rays
9 When the K.E. of photoelectric is zero, the frequency of incident photon is.
A. Less than
B. greater than
C. Equal to
D. Much greater
10 All motions are
A. Absolute
B. Uniform
C. Relative
D. Variable

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