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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
The maximum kinetic energy of emitted photoelectrons depends upon:
Question # 2
Photo cells are used for :
Question # 3
The dimensions of Planck’s constant “h” are same as that of:
Question # 4
In photoelectric effect, electrons are emitted with:
Question # 5
In order to increase the K.E of ejected photo electrons, there should be an increase in:
Question # 6
The number of electrons emitted depend upon
Question # 7
The maximum energy of the photoelectrons depends upon:
Question # 8
A photo cell is based on:
Question # 9
Which of the particles, electron, proton and neutron moving with same speed has longest wave length?
Question # 10
De-Broglie received the Nobel prize on his work on:
Question # 11
The energy of photon of wavelength 1240 nm is:
Question # 12
A.H Compton studied the scattering of X-rays by loosely bound electrons from a graph target in:
Question # 13
Joule-second is the unit of:
Question # 14
Photo cells is a device which convert light into:
Question # 15
De-Broglie received the Nobel prize in
Question # 16
There is a certain frequency below which no electrons are emitted from the metal surface, this frequency is known as:
Question # 17
The minimum energy required by an electron to eject from metal surface is known as:
Question # 18
The photoelectric effect was explained by:
Question # 19
The unit of work function is
Question # 20
In a photocell, sodium and potassium emit electrons for:
Top Scorers Of MDCAT Physics Chapter 15 Modern Physics MCQ's Test MCQ`s Test
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D Dania 07 - Jan - 2023 08 Min 39 Sec 18/20 -
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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 | Photoelectric effect and Compton effect prove the: |
A. Wave nature of light
B. Particle nature of light
C. Dual nature of light
D. Dual nature of light
|
| 2 | In photoelectric effect, if we increase the frequency of the incident light then of the electrons increased |
A. Number
B. K.E
C. P.E
D. Frequency
|
| 3 | In photoelectric effect, electrons are emitted with: |
A. Same energy
B. Different energies
C. Both (a) & (b)
D. Intermittent energies
|
| 4 | Diffraction pattern has also been observed for: |
A. Proton
B. Neutron
C. Hydrogen atom
D. All of them
|
| 5 | The stopping potential for a certain metal is 10 volt, the max. Energy of emitted electron is: |
A. 10 J
B. 100 J
C. 1.6 × 10-18 J
D. 1.6 × 10-19 J
|
| 6 | The energy of photon of energy 1 eV is: |
A. 1240 nm
B. 1040 nm
C. 1000 nm
D. 620 nm
|
| 7 | 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
|
| 8 | Joule-second is the unit of: |
A. Energy
B. Heat
C. Planck’s constant
D. None of these
|
| 9 | 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
|
| 10 | In a photocell, certain metal emits electrons for : |
A. Visible light
B. Infrared light
C. Ultraviolet light
D. All of these
|
Test Questions
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