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MCQ's Test For Physics ECAT Pre Engineering Chapter 20 Atomic Spectra
Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 20 Atomic Spectra
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Total Questions15
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Time Allowed20
Physics ECAT Pre Engineering Chapter 20 Atomic Spectra
00:00
Question # 1
By CAT scans, we can detect the density difference of the order of:
Question # 2
The holes created in the L and M shells are occupied by transitions of:
Question # 3
Graph of Black body radiation is example of
Question # 4
A metastable stae:
Question # 5
The natural arrangement of colours in the spectrum of white light spectrum is
Question # 6
In case of braking radiations, when the rate of deceleration is very large, the emitted radiation corresponds to:
Question # 7
The process of formation of spectrum is called:
Question # 8
The inkjet printer eject a thin stream of:
Question # 9
The transitions of electrons in the hydrogen atom result in the emission of spectral lies in the:
Question # 10
Selenium is:
Question # 11
Static electricity is produced by the transfer of:
Question # 12
An compared to solid matter, a crack or an air bubble allows:
Question # 13
In flesh, light element like carbon, hydrogen and oxygen predominate. Three elements allows ______ amount of incident X-ray to pass through them
Question # 14
An electron of the hydrogen atom in the second orbit is called its:
Question # 15
Balmer series was identified in:
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ECAT Physics Chapter 20 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The results of spectra obtained by Blamer were expressed in 1896 by |
A. Bohr
B. Rydberg
C. Planck
D. Rutherford
|
| 2 | If the distance between two charges is doubled,the force between them will become: |
A. Double
B. Half
C. One third
D. One fourth
|
| 3 | 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
|
| 4 | Tick the series which lies in the visible region: |
A. Lyman series
B. Balmer series
C. Paschen series
D. Brackett series
|
| 5 | Energy required by an electron revolving in certain orbit to jump to an excited state is called: |
A. Ionization energy
B. Ionization potential
C. Excitation energy
D. Excitation potential
|
| 6 | The first shell near the neucles is |
A. L-shell
B. X-shell
C. N-shell
D. M-shell
|
| 7 | The range of wavelengths of colurs in the visible colours is |
A. 140 nm to 456 nm
B. 10 nm to 56 nm
C. 410 nm to 656 nm
D. 910 nm to 956 nm
|
| 8 | Braking radiation causes: |
A. Continuous spectrum
B. Line Spectrum
C. Band spectrum
D. Discrete specturm
|
| 9 | Balmer series lies in that region of electromagnetic wave spectrum which is called: |
A. Visible region
B. Invisible region
C. Infra-red region
D. ultraviolet region
|
| 10 | Graph of Black body radiation is example of |
A. Band spectra
B. Continuo's spectra
C. Line spectra
D. All
|
Test Questions
Share your comments & questions here
Salmankhan
01 Feb 2018Some mcqs having wrong answers.