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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
Ultraviolet region lies in ______ series
Question # 2
In helium Neon Laser Neon = 15% and Helium = 85% used. The lasing gas this unit is
Question # 3
The results of spectra obtained by Blamer were expressed in 1896 by
Question # 4
The holes created in the L and M shells are occupied by transitions of:
Question # 5
Gaussian surface is always:
Question # 6
The photocopying process is called:
Question # 7
Balmer series lies in that region of electromagnetic wave spectrum which is called:
Question # 8
X-rays can penetrate in a solid matte through a distance of several:
Question # 9
In flesh, light element like carbon, hydrogen and oxygen predominate. Three elements allows ______ amount of incident X-ray to pass through them
Question # 10
Static electricity is produced by the transfer of:
Question # 11
Coulomb multiplied by volt by volt gives the unit called:
Question # 12
The electric field lines start from:
Question # 13
The spectrum emitted from hydrogen filled discharge tube is:
Question # 14
If the distance between two charges is doubled,the force between them will become:
Question # 15
The natural arrangement of colours in the spectrum of white light spectrum is
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ECAT Physics Chapter 20 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The process of formation of spectrum is called: |
A. Interference
B. Spectroscopy
C. Dispersion
D. Reflection
|
| 2 | Balmer series was identified in: |
A. 1685
B. 1785
C. 1885
D. 1985
|
| 3 | The transitions of electrons in the hydrogen atom result in the emission of spectral lies in the: |
A. Ultra red region
B. Visible region
C. Ultraviolet region
D. Any of these
|
| 4 | The results of spectra obtained by Balmer were expressed in 1896 by: |
A.
Bohr
B. Rydberg
C. Planck
D. Rutherford
|
| 5 | In flesh, light element like carbon, hydrogen and oxygen predominate. Three elements allows ______ amount of incident X-ray to pass through them |
A. Small
B. Greater
C. Equal
D. Sometimes
|
| 6 | The photocopying process is called: |
A. Geography
B. Sonography
C. Xerography
D. Zerography
|
| 7 | 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
|
| 8 | The lasing or active medium in He-Ne laser discharge tube is: |
A. Nitrogen
B. Helium
C. Hydrogen
D. Neon
|
| 9 | The value of the metastable state for Neon is |
A. 20.66eV
B. 20.61eV
C. 19.23eV
D. 18.70eV
|
| 10 | Graph of Black body radiation is example of |
A. Band spectra
B. Continuo's spectra
C. Line spectra
D. All
|
Test Questions
Share your comments & questions here
Salmankhan
01 Feb 2018Some mcqs having wrong answers.