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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
Photo cells are used for :
Question # 2
J.J Thomson finds:
Question # 3
Davisson and Germer, in their experiment used:
Question # 4
In Compton effect, it was considered that X-rays consist of:
Question # 5
In a photocell, certain metal emits electrons for :
Question # 6
Rest mass energy of electron is:
Question # 7
Interference and diffraction confirm:
Question # 8
The stopping potential for a certain metal is 10 volt, the max. Energy of emitted electron is:
Question # 9
The energy of photon of wavelength 1240 nm is:
Question # 10
Moving photons posses:
Question # 11
Which of the particles, electron, proton and neutron moving with same speed has longest wave length?
Question # 12
In order to increase the K.E of ejected photo electrons, there should be an increase in:
Question # 13
Potassium cathode in photocell emits electrons for a light:
Question # 14
In order to perform experiment, Davisson and Germer used accelerating voltage of:
Question # 15
The energy of photon of wavelength 620 nm is:
Question # 16
The energy of photon of energy 1 eV is:
Question # 17
Joule-second is the unit of:
Question # 18
In a photocell, sodium and potassium emit electrons for:
Question # 19
The maximum kinetic energy of emitted photoelectrons depends upon:
Question # 20
A photo cell is based on:
Top Scorers Of MDCAT Physics Chapter 15 Modern Physics MCQ's Test MCQ`s Test
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MCAT Physics Chapter 15 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | 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)
|
| 2 | 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
|
| 3 | In order to perform experiment, Davisson and Germer used accelerating voltage of: |
A. 54V
B. 120V
C. 220V
D. 400V
|
| 4 | The unit of work function is |
A. eV
B. Volt
C. Farad
D. Herdz
|
| 5 | Compton Effect makes the use of the law of conservation of: |
A. Energy
B. Momentum
C. Charge
D. Both (a) & (b)
|
| 6 | A photo cell is based on: |
A. Compton effect
B. Pair production
C. Photo cell
D. All of these
|
| 7 | The maximum kinetic energy of emitted photoelectrons depends upon: |
A. The intensity of incident light
B. Frequency of the incident light
C. Temperature of the surface
D. All of above
|
| 8 | Joule-second is the unit of: |
A. Energy
B. Heat
C. Planck’s constant
D. None of these
|
| 9 | The photoelectric effect was explained by: |
A. Einstein
B. Davison
C. Hertz
D. Planck
|
| 10 | Diffraction pattern has also been observed for: |
A. Proton
B. Neutron
C. Hydrogen atom
D. All of them
|
Test Questions
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