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MCQ's Test For Physics ECAT Pre Engineering Chapter 20 Atomic Spectra
Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 20 Atomic Spectra
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Total Questions15
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Time Allowed20
Physics ECAT Pre Engineering Chapter 20 Atomic Spectra
00:00
Question # 1
Lyman series in the spectrum of hydrogen exists in the :
Question # 2
The value of the metastable state for Neon is
Question # 3
Tick the series which lies in the visible region:
Question # 4
In helium Neon Laser Neon = 15% and Helium = 85% used. The lasing gas this unit is
Question # 5
The formula of Brackett series can be obtained by putting in the general formula, the value of n equal to:
Question # 6
Spectrum represents the number of component colours present in certain light in terms of:
Question # 7
The inkjet printer eject a thin stream of:
Question # 8
The first series which was identified in the spectrum of hydrogen is called:
Question # 9
In case of braking radiations, when the rate of deceleration is very large, the emitted radiation corresponds to:
Question # 10
X-ray are also known as
Question # 11
X-rays produced in a tube operating at 105V. The speed of X-rays produced is
Question # 12
We can excite an atom by
Question # 13
The process of formation of spectrum is called:
Question # 14
Energy required by an electron revolving in certain orbit to jump to an excited state is called:
Question # 15
The shell closer to the nucleus is called:
Top Scorers Of Physics ECAT Pre Engineering Chapter 20 Atomic Spectra MCQ`s Test
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F Farzand Shah Farzand Shah 01 - Jun - 2024 00 Min 44 Sec 60/60 -
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ECAT Physics Chapter 20 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The He-Ne laser discharge tube is filled with: |
A. 85% He
B. 15% He
C. 50% He
D. 60% He
|
| 2 | Selenium is: |
A. An insulator
B. A conductor
C. Both A and B
D. Excellent conductor
|
| 3 | An compared to solid matter, a crack or an air bubble allows: |
A. Great amount of X-rays to pass
B. Smallast amount of X-rays to pass
C. Very samall amount of X-rays to pass
D. Any of these
|
| 4 | Laser is a beam of: |
A. Visible light
B. Infra red light
C. Ultra violet light
D. Violet light only
|
| 5 | Static electricity is produced by the transfer of: |
A. Electrons
B. Protons
C. One fluid
D. Two fluid
|
| 6 | Gaussian surface is always: |
A. Rectangular
B. Spherical
C. Cylinder
D. Box shape
|
| 7 | The photocopying process is called: |
A. Geography
B. Sonography
C. Xerography
D. Zerography
|
| 8 | Tick the series which lie/s in. the infra-red region. |
A. Pfund series
B. Brackett series
C. Paschen series
D. All of these
|
| 9 | X-rays produced in a tube operating at 105V. The speed of X-rays produced is |
A. 3 x 108m/s
B. 3.1 x 108m/s
C. 2.8 x 108m/s
D. 1.88 x 108m/s
|
| 10 | Balmer series was identified in: |
A. 1685
B. 1785
C. 1885
D. 1985
|
Test Questions
Share your comments & questions here
Salmankhan
01 Feb 2018Some mcqs having wrong answers.