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MCQ's Test For MDCAT Physics Chapter 15 Modern Physics MCQ's Test
Try The MCQ's Test For MDCAT Physics Chapter 15 Modern Physics MCQ's Test
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Total Questions20
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Time Allowed20
MDCAT Physics Chapter 15 Modern Physics MCQ's Test
00:00
Question # 1
A photo cell is based on:
Question # 2
In a photocell, certain metal emits electrons for :
Question # 3
The maximum energy of the photoelectrons depends upon:
Question # 4
A human eye can detect the electromagnetic radiations of the type:
Question # 5
In order to increase the K.E of ejected photo electrons, there should be an increase in:
Question # 6
The energy of photon of energy 1 eV is:
Question # 7
A.H Compton studied the scattering of X-rays by loosely bound electrons from a graph target in:
Question # 8
Photo cells is a device which convert light into:
Question # 9
In a photocell, sodium and potassium emit electrons for:
Question # 10
The unit of work function is
Question # 11
In photoelectric effect, electrons are emitted:
Question # 12
The unit Compton wavelength is same as:
Question # 13
The maximum kinetic energy of emitted photoelectrons depends upon:
Question # 14
The maximum energy of the photoelectrons can be determined by making the:
Question # 15
A human eye can detect the electromagnetic radiations of the type:
Question # 16
Photoelectric effect and Compton effect prove the:
Question # 17
Potassium cathode in photocell emits electrons for a light:
Question # 18
De-Broglie received the Nobel prize in
Question # 19
Interference and diffraction of light confirms its:
Question # 20
In photoelectric effect, electrons are emitted with:
Top Scorers Of MDCAT Physics Chapter 15 Modern Physics MCQ's Test MCQ`s Test
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M Minahil Fatima 03 - May - 2023 00 Min 02 Sec 20/20 -
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R Rubab Fatima 10 - Nov - 2022 08 Min 34 Sec 11/20
MCAT Physics Chapter 15 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | J.J Thomson finds: |
A. Particle nature of the electron
B. Dual nature of electron
C. Wave nature of electron
D. Electromagnetic nature of electron
|
| 2 | In a photocell, certain metal emits electrons for : |
A. Visible light
B. Infrared light
C. Ultraviolet light
D. All of these
|
| 3 | The minimum energy required by an electron to eject from metal surface is known as: |
A. Photo energy
B. Critical energy
C. Threshold energy
D. Work function
|
| 4 | The photoelectric effect was explained by: |
A. Einstein
B. Davison
C. Hertz
D. Planck
|
| 5 | The reverse process of photo-electric effect is called: |
A. Pair production
B. Compton effect
C. Annihilation of matter
D. X-rays
|
| 6 | Interference and diffraction confirm: |
A. Particle nature
B. Wave nature
C. Dual nature
D. None of these
|
| 7 | The number of electrons emitted depend upon |
A. Colour of target surface
B. Shape of surface
C. Frequency of incident light
D. Intensity of incident light
|
| 8 | In a photocell, sodium and potassium emit electrons for: |
A. Visible light
B. Infrared light
C. Ultraviolet light
D. All of these
|
| 9 | The maximum energy of the photoelectrons depends upon: |
A. Frequency of incident light
B. Intensity of incident light
C. Nature of metal
D. Both (a) & (c)
|
| 10 | The unit Compton wavelength is same as: |
A. Compton wavelength
B. Compton frequency
C. Compton shift
D. Both (a) & (b)
|
Test Questions