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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
Spectrum represents the number of component colours present in certain light in terms of:
Question # 2
The minimum wavelength of X-rays produced of 1KV potential difference is applied across the anode and cathode of the tube is
Question # 3
By CAT scans, we can detect the density difference of the order of:
Question # 4
Static electricity is produced by the transfer of:
Question # 5
The transitions of electrons in the hydrogen atom result in the emission of spectral lies in the:
Question # 6
In case of braking radiations, when the rate of deceleration is very large, the emitted radiation corresponds to:
Question # 7
CT scanning is the abbreviated name of
Question # 8
Graph of Black body radiation is example of
Question # 9
Lyman series in the spectrum of hydrogen exists in the :
Question # 10
Tick the series which lies in the visible region:
Question # 11
The photocopying process is called:
Question # 12
If the distance between two charges is doubled,the force between them will become:
Question # 13
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
Question # 14
The He-Ne laser discharge tube is filled with:
Question # 15
The value of the metastable state for Neon is
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ECAT Physics Chapter 20 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Laser is a beam of: |
A. Visible light
B. Infra red light
C. Ultra violet light
D. Violet light only
|
| 2 | The process of formation of spectrum is called: |
A. Interference
B. Spectroscopy
C. Dispersion
D. Reflection
|
| 3 | 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
|
| 4 | Lyman series in the spectrum of hydrogen exists in the : |
A. Infra-red region
B. Visible region
C. Ultraviolet region
D. Both(A) and (B)
|
| 5 | The photocopying process is called: |
A. Geography
B. Sonography
C. Xerography
D. Zerography
|
| 6 | The minimum wavelength of X-rays produced of 1KV potential difference is applied across the anode and cathode of the tube is |
A. 1.24 x 10-10m
B. 7.92 x 10-20m
C. 2.78 x 10-14m
D. 3.88 x 10-11m
|
| 7 | Balmer series was identified in: |
A. 1685
B. 1785
C. 1885
D. 1985
|
| 8 | Selenium is: |
A. An insulator
B. A conductor
C. Both A and B
D. Excellent conductor
|
| 9 | Tick the series which lie/s in. the infra-red region. |
A. Pfund series
B. Brackett series
C. Paschen series
D. All of these
|
| 10 | The results of spectra obtained by Blamer were expressed in 1896 by |
A. Bohr
B. Rydberg
C. Planck
D. Rutherford
|
Test Questions
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