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

A perfect absorber must also be perfect

Question # 2

Using relativistic effects the location of an air craft after an hour fight can be predicated about

Question # 3

The Compton effect is associated with

Question # 4

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

Question # 5

Wave nature of light appears in

Question # 6

Photodiode is used for wave nature of.

Question # 7

Energy of Black body radiation depends upon

Question # 8

Platinum wire becomes yellow at a temperature of.

Question # 9

The materialization of energy take place in the process of.

Question # 10

Joule second is the unit of.

Question # 11

The maximum kinetic energy of emitted photo electrons depends upon.

Question # 12

The value of Wien's constant:

Question # 13

The converses of annihilation of matter is:

Question # 14

The unit of work function is

Question # 15

When platinum is heated is become dull red at:

Question # 16

The numerical value of Compton wavelength is equal to

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 Which one of the following paved the way for modern physics
A. Newtonian mechanics
B. Theory of relativity
C. Quantum theory
D. All of above
2 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
3 Einstein photoelectric equation is
D. None of these
4 Albert Einstein got noble prize in:
A. 1926
B. 1921
C. 1918
D. 1931
5 Application of wave like nature of particle is
A. Photodiode
B. Optical microscope
C. Electron microscope
D. Compound microscope
6 The quantity/factor h/moc has the dimensions of.
A. Length
B. Time
C. Mass
D. Energy
7 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
8 A positron is an anti particle of.
A. Proton
B. Electron
C. Neutron
D. Photon
9 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
10 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

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