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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
The energy of photon of wavelength 620 nm is:
Question # 2
G.P Thomson revealed:
Question # 3
In photoelectric effect, electrons are emitted with:
Question # 4
Photo cells is a device which convert light into:
Question # 5
The maximum energy of the photoelectrons can be determined by making the:
Question # 6
In a photocell, sodium and potassium emit electrons for:
Question # 7
The reverse process of photo-electric effect is called:
Question # 8
Diffraction pattern has also been observed for:
Question # 9
There is a certain frequency below which no electrons are emitted from the metal surface, this frequency is known as:
Question # 10
The minimum energy required by an electron to eject from metal surface is known as:
Question # 11
The maximum kinetic energy of emitted photoelectrons depends upon:
Question # 12
In photoelectric effect, electrons are emitted:
Question # 13
In photoelectric effect, if we increase the frequency of the incident light then of the electrons increased
Question # 14
The photoelectric effect was explained by:
Question # 15
In a photocell, cesium coated oxidized silver emits electrons for :
Question # 16
The unit of work function is
Question # 17
Interference and diffraction confirm:
Question # 18
Photo cells are used for :
Question # 19
De-Broglie received the Nobel prize on his work on:
Question # 20
Which of the particles, electron, proton and neutron moving with same speed has longest wave length?
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 -
A ammara habib 10 - Jul - 2023 00 Min 07 Sec 19/20 -
D Dania 07 - Jan - 2023 08 Min 39 Sec 18/20 -
R Rose Lily 28 - May - 2023 04 Min 12 Sec 17/20 -
A Afifa Butt 21 - Mar - 2023 05 Min 26 Sec 15/20 -
N Nemo Remo 18 - Feb - 2023 05 Min 59 Sec 15/20 -
M Meer Sadeed 23 - Aug - 2023 10 Min 50 Sec 15/20 -
M Mehwish Abdul Sattar 25 - May - 2023 05 Min 09 Sec 14/20 -
B Bader Rasool 13 - Jun - 2023 05 Min 44 Sec 14/20 -
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S Shabana khan 17 - Apr - 2023 04 Min 42 Sec 12/20 -
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M Muhammad Hamza 01 - Jul - 2023 04 Min 44 Sec 11/20 -
R Rubab Fatima 10 - Nov - 2022 08 Min 34 Sec 11/20
MCAT Physics Chapter 15 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The energy of photon of wavelength 620 nm is: |
A. 0.5 eV
B. 1.0 eV
C. 1.5 eV
D. 2.0 eV
|
| 2 | In order to increase the K.E of ejected photo electrons, there should be an increase in: |
A. Intensity of radiation
B. NoneI
C. Frequency of radiation
D. Both (b) & (c)
|
| 3 | The unit of work function is |
A. eV
B. Volt
C. Farad
D. Herdz
|
| 4 | Davisson and Germer, in their experiment used: |
A. Nickle crystal
B. Lead crystal
C. Graphite crystal
D. Glass
|
| 5 | De-Broglie received the Nobel prize in |
A. 1929
B. 1937
C. 1928
D. 1924
|
| 6 | A photo cell is based on: |
A. Compton effect
B. Pair production
C. Photo cell
D. All of these
|
| 7 | Which of the particles, electron, proton and neutron moving with same speed has longest wave length? |
A. Electron
B. Proton
C. Neutron
D. All have same
|
| 8 | 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
|
| 9 | Joule-second is the unit of: |
A. Energy
B. Heat
C. Planck’s constant
D. None of these
|
| 10 | In a photocell, sodium and potassium emit electrons for: |
A. Visible light
B. Infrared light
C. Ultraviolet light
D. All of these
|
Test Questions
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