MDCAT Physics Chapter 15 MCQ Test With Answer for (Modern Physics)

MCQ's Test For MDCAT Physics Chapter 15 Modern Physics MCQ's Test

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MDCAT Physics Chapter 15 Modern Physics MCQ's Test

00:00
Question # 1

The reverse process of photo-electric effect is called:

Question # 2

Rest mass energy of electron is:

Question # 3

De-Broglie received the Nobel prize on his work on:

Question # 4

Diffraction pattern has also been observed for:

Question # 5

Interference and diffraction of light confirms its:

Question # 6

In order to perform experiment, Davisson and Germer used accelerating voltage of:

Question # 7

The energy of photon of wavelength 620 nm is:

Question # 8

The minimum energy required by an electron to eject from metal surface is known as:

Question # 9

A photo cell is based on:

Question # 10

Interference and diffraction confirm:

Question # 11

Which of the particles, electron, proton and neutron moving with same speed has longest wave length?

Question # 12

In a photocell, cesium coated oxidized silver emits electrons for :

Question # 13

Compton Effect makes the use of the law of conservation of:

Question # 14

The maximum kinetic energy of emitted photoelectrons depends upon:

Question # 15

In Compton effect, it was considered that X-rays consist of:

Question # 16

The unit Compton wavelength is same as:

Question # 17

There is a certain frequency below which no electrons are emitted from the metal surface, this frequency is known as:

Question # 18

A.H Compton studied the scattering of X-rays by loosely bound electrons from a graph target in:

Question # 19

In photoelectric effect, electrons are emitted with:

Question # 20

Photoelectric effect and Compton effect prove the:

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MCAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 The unit Compton wavelength is same as:
A. Compton wavelength
B. Compton frequency
C. Compton shift
D. Both (a) & (b)
2 In a photocell, certain metal emits electrons for :
A. Visible light
B. Infrared light
C. Ultraviolet light
D. All of these
3 Diffraction pattern has also been observed for:
A. Proton
B. Neutron
C. Hydrogen atom
D. All of them
4 Photo cells is a device which convert light into:
A. Wave nature
B. Particle nature
C. Particle wave nature
D. Dual nature
5 The maximum energy of the photoelectrons can be determined by making the:
A. Anode positive
B. Anode negative
C. Cathode positive
D. Both (b) & (c)
6 There is a certain frequency below which no electrons are emitted from the metal surface, this frequency is known as:
A. Critical frequency
B. Threshold frequency
C. Maximum frequency
D. Minimum frequency
7 The reverse process of photo-electric effect is called:
A. Pair production
B. Compton effect
C. Annihilation of matter
D. X-rays
8 In photoelectric effect, electrons are emitted with:
A. Same energy
B. Different energies
C. Both (a) & (b)
D. Intermittent energies
9 De-Broglie received the Nobel prize in
A. 1929
B. 1937
C. 1928
D. 1924
10 In Compton effect, it was considered that X-rays consist of:
A. Electrons
B. Positrons
C. Photons
D. All of these

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