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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
The photocopying process is called:
Question # 2
The range of wavelengths of colurs in the visible colours is
Question # 3
Photons must have energy equal to
Question # 4
The natural arrangement of colours in the spectrum of white light spectrum is
Question # 5
The first shell near the neucles is
Question # 6
X-ray are also known as
Question # 7
X-rays can penetrate in a solid matte through a distance of several:
Question # 8
The shell closer to the nucleus is called:
Question # 9
The electric field lines start from:
Question # 10
In case of braking radiations, when the rate of deceleration is very large, the emitted radiation corresponds to:
Question # 11
A metastable stae:
Question # 12
In flesh, light element like carbon, hydrogen and oxygen predominate. Three elements allows ______ amount of incident X-ray to pass through them
Question # 13
The transitions of electrons in the hydrogen atom result in the emission of spectral lies in the:
Question # 14
Static electricity is produced by the transfer of:
Question # 15
The He-Ne laser discharge tube is filled with:
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ECAT Physics Chapter 20 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Tick the series which lie/s in. the infra-red region. |
A. Pfund series
B. Brackett series
C. Paschen series
D. All of these
|
| 2 | Tick the series which lies in the visible region: |
A. Lyman series
B. Balmer series
C. Paschen series
D. Brackett series
|
| 3 | In helium Neon Laser Neon = 15% and Helium = 85% used. The lasing gas this unit is |
A. Helium
B. Neon
C. Both
D. None of these
|
| 4 | The photocopying process is called: |
A. Geography
B. Sonography
C. Xerography
D. Zerography
|
| 5 | A metastable stae: |
A. Is an excited state
B. Is that in which excited electron is stable
C. Is that in which excited electron is usually unstable
D. Means a time interval of 10-8second
|
| 6 | X-rays can penetrate in a solid matte through a distance of several: |
A. Kilo metres
B. Metres
C. Centimeters
D. A few angstroms
|
| 7 | The holes created in the L and M shells are occupied by transitions of: |
A. Electrons from lower states
B. Electrons from higher state
C. Positrons from higher states
D. Electrons from K shell
|
| 8 | Ultraviolet region lies in ______ series |
A. Layman
B. Balmer
C. P fund
D. B racket
|
| 9 | The spectrum emitted from hydrogen filled discharge tube is: |
A. Line spectrum
B. Discrete spectrum
C. And spectrum
D. Absorption spectrum
|
| 10 | Static electricity is produced by the transfer of: |
A. Electrons
B. Protons
C. One fluid
D. Two fluid
|
Test Questions
Share your comments & questions here
Salmankhan
01 Feb 2018Some mcqs having wrong answers.