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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
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Question # 1
A human eye can detect the electromagnetic radiations of the type:
Question # 2
Which of the particles, electron, proton and neutron moving with same speed has longest wave length?
Question # 3
In Compton effect, it was considered that X-rays consist of:
Question # 4
In a photocell, certain metal emits electrons for :
Question # 5
The maximum kinetic energy of emitted photoelectrons depends upon:
Question # 6
In photoelectric effect, electrons are emitted with:
Question # 7
In a photocell, cesium coated oxidized silver emits electrons for :
Question # 8
In order to perform experiment, Davisson and Germer used accelerating voltage of:
Question # 9
Potassium cathode in photocell emits electrons for a light:
Question # 10
De-Broglie received the Nobel prize in
Question # 11
The maximum kinetic energy of emitted photoelectrons depends upon:
Question # 12
In photoelectric effect, if we increase the frequency of the incident light then of the electrons increased
Question # 13
Interference and diffraction of light confirms its:
Question # 14
There is a certain frequency below which no electrons are emitted from the metal surface, this frequency is known as:
Question # 15
The stopping potential for a certain metal is 10 volt, the max. Energy of emitted electron is:
Question # 16
A human eye can detect the electromagnetic radiations of the type:
Question # 17
De-Broglie received the Nobel prize on his work on:
Question # 18
The energy of photon of energy 1 eV is:
Question # 19
G.P Thomson revealed:
Question # 20
In order to increase the K.E of ejected photo electrons, there should be an increase in:
Top Scorers Of MDCAT Physics Chapter 15 Modern Physics MCQ's Test MCQ`s Test
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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 | 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)
|
| 2 | 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
|
| 3 | In photoelectric effect, electrons are emitted with: |
A. Same energy
B. Different energies
C. Both (a) & (b)
D. Intermittent energies
|
| 4 | 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
|
| 5 | Photo cells is a device which convert light into: |
A. Wave nature
B. Particle nature
C. Particle wave nature
D. Dual nature
|
| 6 | The unit of work function is |
A. eV
B. Volt
C. Farad
D. Herdz
|
| 7 | A human eye can detect the electromagnetic radiations of the type: |
A. Infrared radiations
B. For- infrared radiations
C. X-rays radiations
D. Red radiations
|
| 8 | Moving photons posses: |
A. Energy
B. Momentum
C. Wavelength
D. All of these
|
| 9 | In a photocell, cesium coated oxidized silver emits electrons for : |
A. Visible light
B. Infrared light
C. Ultraviolet light
D. All of these
|
| 10 | The reverse process of photo-electric effect is called: |
A. Pair production
B. Compton effect
C. Annihilation of matter
D. X-rays
|
Test Questions
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