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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
The holes created in the L and M shells are occupied by transitions of:
Question # 2
The inkjet printer eject a thin stream of:
Question # 3
We can excite an atom by
Question # 4
The first shell near the neucles is
Question # 5
The shell closer to the nucleus is called:
Question # 6
CT scanning is the abbreviated name of
Question # 7
Spectrum represents the number of component colours present in certain light in terms of:
Question # 8
A metastable stae:
Question # 9
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 # 10
Static electricity is produced by the transfer of:
Question # 11
Lyman series in the spectrum of hydrogen exists in the :
Question # 12
The transitions of electrons in the hydrogen atom result in the emission of spectral lies in the:
Question # 13
The process of formation of spectrum is called:
Question # 14
If the distance between two charges is doubled,the force between them will become:
Question # 15
The first series which was identified in the spectrum of hydrogen is called:
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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 | Ultraviolet region lies in ______ series |
A. Layman
B. Balmer
C. P fund
D. B racket
|
| 3 | The results of spectra obtained by Blamer were expressed in 1896 by |
A. Bohr
B. Rydberg
C. Planck
D. Rutherford
|
| 4 | By CAT scans, we can detect the density difference of the order of: |
A. 1%
B. 20%
C. 30%
D. 50%
|
| 5 | 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
|
| 6 | 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
|
| 7 | 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
|
| 8 | 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
|
| 9 | 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
|
| 10 | The photocopying process is called: |
A. Geography
B. Sonography
C. Xerography
D. Zerography
|
Test Questions
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