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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 first shell near the neucles is
Question # 2
In case of braking radiations, when the rate of deceleration is very large, the emitted radiation corresponds to:
Question # 3
Balmer series lies in that region of electromagnetic wave spectrum which is called:
Question # 4
Graph of Black body radiation is example of
Question # 5
The natural arrangement of colours in the spectrum of white light spectrum is
Question # 6
The life time of metastable state is equal to
Question # 7
If the distance between two charges is doubled,the force between them will become:
Question # 8
The first series which was identified in the spectrum of hydrogen is called:
Question # 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
Question # 10
An compared to solid matter, a crack or an air bubble allows:
Question # 11
The results of spectra obtained by Balmer were expressed in 1896 by:
Question # 12
The inkjet printer eject a thin stream of:
Question # 13
CT scanning is the abbreviated name of
Question # 14
Spectrum represents the number of component colours present in certain light in terms of:
Question # 15
X-rays can penetrate in a solid matte through a distance of several:
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ECAT Physics Chapter 20 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | 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
|
| 2 | We can excite an atom by |
A. Bombardment of particles
B. Radiating photons
C. Providing potential difference
D. All answer are true
|
| 3 | Tick the series which lie/s in. the infra-red region. |
A. Pfund series
B. Brackett series
C. Paschen series
D. All of these
|
| 4 | 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
|
| 5 | Laser is a beam of: |
A. Visible light
B. Infra red light
C. Ultra violet light
D. Violet light only
|
| 6 | If the distance between two charges is doubled,the force between them will become: |
A. Double
B. Half
C. One third
D. One fourth
|
| 7 | Braking radiation causes: |
A. Continuous spectrum
B. Line Spectrum
C. Band spectrum
D. Discrete specturm
|
| 8 | Tick the series which lies in the visible region: |
A. Lyman series
B. Balmer series
C. Paschen series
D. Brackett series
|
| 9 | 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)
|
| 10 | X-rays can penetrate in a solid matte through a distance of several: |
A. Kilo metres
B. Metres
C. Centimeters
D. A few angstroms
|
Test Questions
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