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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
Energy required by an electron revolving in certain orbit to jump to an excited state is called:
Question # 2
The transitions of electrons in the hydrogen atom result in the emission of spectral lies in the:
Question # 3
The photocopying process is called:
Question # 4
CT scanning is the abbreviated name of
Question # 5
Static electricity is produced by the transfer of:
Question # 6
The inkjet printer eject a thin stream of:
Question # 7
Tick the series which lies in the visible region:
Question # 8
Gaussian surface is always:
Question # 9
We can excite an atom by
Question # 10
Ultraviolet region lies in ______ series
Question # 11
An electron of the hydrogen atom in the second orbit is called its:
Question # 12
The results of spectra obtained by Blamer were expressed in 1896 by
Question # 13
Graph of Black body radiation is example of
Question # 14
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 # 15
The results of spectra obtained by Balmer were expressed in 1896 by:
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ECAT Physics Chapter 20 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Ultraviolet region lies in ______ series |
A. Layman
B. Balmer
C. P fund
D. B racket
|
| 2 | The value of the metastable state for Neon is |
A. 20.66eV
B. 20.61eV
C. 19.23eV
D. 18.70eV
|
| 3 | The first series which was identified in the spectrum of hydrogen is called: |
A. Lyman series
B. Balmer series
C. Paschen series
D. Brackett series
|
| 4 | We can excite an atom by |
A. Bombardment of particles
B. Radiating photons
C. Providing potential difference
D. All answer are true
|
| 5 | 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
|
| 6 | Braking radiation causes: |
A. Continuous spectrum
B. Line Spectrum
C. Band spectrum
D. Discrete specturm
|
| 7 | 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)
|
| 8 | The results of spectra obtained by Balmer were expressed in 1896 by: |
A.
Bohr
B. Rydberg
C. Planck
D. Rutherford
|
| 9 | The spectrum emitted from hydrogen filled discharge tube is: |
A. Line spectrum
B. Discrete spectrum
C. And spectrum
D. Absorption spectrum
|
| 10 | 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)
|
Test Questions
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