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MCQ's Test For ECAT Physics Chapter 20 Atomic Spectra
Try The MCQ's Test For ECAT Physics Chapter 20 Atomic Spectra
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Total Questions15
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Time Allowed20
ECAT Physics Chapter 20 Atomic Spectra
00:00
Question # 1
Laser is a beam of:
Question # 2
The shell closer to the nucleus is called:
Question # 3
The process of formation of spectrum is called:
Question # 4
In flesh, light element like carbon, hydrogen and oxygen predominate. Three elements allows ______ amount of incident X-ray to pass through them
Question # 5
The first series which was identified in the spectrum of hydrogen is called:
Question # 6
Tick the series which lie/s in. the infra-red region.
Question # 7
An electron of the hydrogen atom in the second orbit is called its:
Question # 8
Ultraviolet region lies in ______ series
Question # 9
Graph of Black body radiation is example of
Question # 10
The He-Ne laser discharge tube is filled with:
Question # 11
Lyman series in the spectrum of hydrogen exists in the :
Question # 12
The value of the metastable state for Neon is
Question # 13
The lasing or active medium in He-Ne laser discharge tube is:
Question # 14
The inkjet printer eject a thin stream of:
Question # 15
If the distance between two charges is doubled,the force between them will become:
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ECAT Physics Chapter 20 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The natural arrangement of colours in the spectrum of white light spectrum is |
A. VIBGYOR
B. ROYBGIV
C. ROYBIGV
D. BIGROYV
|
| 2 | Balmer series was identified in: |
A. 1685
B. 1785
C. 1885
D. 1985
|
| 3 | Static electricity is produced by the transfer of: |
A. Electrons
B. Protons
C. One fluid
D. Two fluid
|
| 4 | Atoms of hydrogen gas can be excited by passing electric current through it when the gas is filled into the discharge tube at a pressure which is |
A. Less than atmospheric pressure
B. Much less than atmospheric pressure
C. Greater than atmospheric pressure
D. Much greater than atmospheric pressure
|
| 5 | The inkjet printer eject a thin stream of: |
A. Water
B. Oil
C. Ink
D. Any above
|
| 6 | Consider a photon of continuous X-ray and a photon of characteristics X-ray of same wavelength. Which of the following is/are different for the two photons |
A. Frequency
B. Penetrating power
C. Energy
D. Method of creation
|
| 7 | The shell closer to the nucleus is called: |
A. N shell
B.
L shell
C. K shell
D. M shell
|
| 8 | 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
|
| 9 | Spectrum represents the number of component colours present in certain light in terms of: |
A. Wavelength
B. Frequency
C. Energy
D. Both (A) and (B)
|
| 10 | 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
|
Test Questions
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