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

Platinum wire becomes yellow at a temperature of.

Question # 2

unit of Plank's constant is same as that of.

Question # 3

Compton's effect is associated with

Question # 4

The Compton effect is associated with

Question # 5

Earth orbital speed is.

Question # 6

The wavelength associated with the protons moving at speed of 40 m/s is.

Question # 7

The value of Wien's constant:

Question # 8

The unit of work function is

Question # 9

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

Question # 10

Which one of the following physical quantities change with relativistic speed?

Question # 11

When platinum is it becomes orange at.

Question # 12

A perfect absorber must also be perfect

Question # 13

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

Question # 14

Compton effect proves.

Question # 15

Internal frame is a frame is which

Question # 16

The principle regarding the dual nature of light was first discovered by

Question # 17

Photo electrons are emitted y using visible light when the metal 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 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
2 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
3 Compton shift is maximum for scattering angle of photon
A. 0o
B. 90o
C. 180o
D. 45o
4 In Compton scatting, the value of shift is equal to Compton's wavelength, when X-rays is scattered at the angle of.
A. 90oC
B. Zero
C. 120oC
D. 45oC
5 The unit of work function is
A. Electron volt
B. Ampere
C. Volt cell
D. Hz
6 Unit of Stephen's constant is
A. W m K-2
B. W m-2 K-4
C. W m K-4
D. None
7 Albert Einstein got noble prize for service in:
A. Pair production
B. Annihilation of matter theory
C. Compton effect
D. Photoelectric effect
8 The quantity/factor h/moc has the dimensions of.
A. Length
B. Time
C. Mass
D. Energy
9 All motions are
A. Absolute
B. Uniform
C. Relative
D. Variable
10 Einstein photoelectric equation is
D. None of these

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