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

Albert Einstein got noble prize in:

Question # 2

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

Question # 3

In the equation if f2 > then

Question # 4

The special theory of relativity based on.

Question # 5

Application of wave like nature of particle is

Question # 6

The materialization of energy take place in the process of.

Question # 7

Compton effect proves.

Question # 8

The concept of direction is purely

Question # 9

Photodiode is used for wave nature of.

Question # 10

When a very high energy modeules such as y radiation interact with matter, the phenomenon arising will be.

Question # 11

Joule second is the unit of.

Question # 12

The converses of annihilation of matter is:

Question # 13

Potassium Cathodes in photocell emit electrons for a light.

Question # 14

The energy of photon is givne by

Question # 15

Pair production can take place only when energy of radiation is equal and greater than 1.02 MeV, thus correct option is.

Question # 16

A positron is an anti particle of.

Question # 17

The most refined form of matter 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 The emission of electrons from metal surface when exposed to light is called:
A. Compton effect
B. Pair production
C. Photoelectric effect
D. None of above
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 Maximum Compton shift is observed at.
A. 30oC
B. 90oC
C. 45oC
D. 180oC
4 The photoelectric effect predicts that light is made of
A. Photons
B. Neutrons
C. Protons
D. None of these
5 Eintein's Photoelectric equation is Ek= hf -∅ in this equation E1, refers to:
A. K.E of al the emited electrons
B. Mean K.E of emited electrons
C. Maximum K.E of emited electrons
D. Minimum K.E of emited electrons
6 Compton effect proves.
A. Wave nature of radiation
B. Wave nature of particle
C. Dual nature of particle
D. Particle nature of radiations
7 A block body is an ideal:
A. Absorber
B. Radiator
C. Both a & b
D. None of above
8 The photon with energy greater than 1.02 MeV can interact with matter as.
A. Photoelectric effect
B. Compton effect
C. Pair production
D. annihilation of matter
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 The energy of the photon of wavelength 500 nm is.
A. 3.10 eV
B. 2.49 eV
C. 1.77 eV
D. 1.52 eV

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