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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
Ultraviolet region lies in ______ series
Question # 2
The transitions of electrons in the hydrogen atom result in the emission of spectral lies in the:
Question # 3
In helium Neon Laser Neon = 15% and Helium = 85% used. The lasing gas this unit is
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 life time of metastable state is equal to
Question # 6
CT scanning is the abbreviated name of
Question # 7
The inkjet printer eject a thin stream of:
Question # 8
Braking radiation causes:
Question # 9
Tick the series which lie/s in. the infra-red region.
Question # 10
The photocopying process is called:
Question # 11
Selenium is:
Question # 12
In case of braking radiations, when the rate of deceleration is very large, the emitted radiation corresponds to:
Question # 13
Lyman series in the spectrum of hydrogen exists in the :
Question # 14
Gaussian surface is always:
Question # 15
X-ray are also known as
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ECAT Physics Chapter 20 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Braking radiation causes: |
A. Continuous spectrum
B. Line Spectrum
C. Band spectrum
D. Discrete specturm
|
| 2 | The first shell near the neucles is |
A. L-shell
B. X-shell
C. N-shell
D. M-shell
|
| 3 | Static electricity is produced by the transfer of: |
A. Electrons
B. Protons
C. One fluid
D. Two fluid
|
| 4 | 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)
|
| 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 | In case of braking radiations, when the rate of deceleration is very large, the emitted radiation corresponds to: |
A. Short wavelength
B. Large wavelength
C. Very large wavelenth
D. Low frequency
|
| 7 | 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
|
| 8 | If the distance between two charges is doubled,the force between them will become: |
A. Double
B. Half
C. One third
D. One fourth
|
| 9 | 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
|
| 10 | The formula of Brackett series can be obtained by putting in the general formula, the value of n equal to: |
A.
one
B. two
C. three
D. four
|
Test Questions
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