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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
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 # 2
The life time of metastable state is equal to
Question # 3
The range of wavelengths of colurs in the visible colours is
Question # 4
Balmer series lies in that region of electromagnetic wave spectrum which is called:
Question # 5
Ultraviolet region lies in ______ series
Question # 6
An electron of the hydrogen atom in the second orbit is called its:
Question # 7
Balmer series was identified in:
Question # 8
By CAT scans, we can detect the density difference of the order of:
Question # 9
The inkjet printer eject a thin stream of:
Question # 10
The value of the metastable state for Neon is
Question # 11
Energy required by an electron revolving in certain orbit to jump to an excited state is called:
Question # 12
The minimum wavelength of X-rays produced of 1KV potential difference is applied across the anode and cathode of the tube is
Question # 13
X-rays can penetrate in a solid matte through a distance of several:
Question # 14
The results of spectra obtained by Balmer were expressed in 1896 by:
Question # 15
Tick the series which lie/s in. the infra-red region.
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ECAT Physics Chapter 20 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | If the distance between two charges is doubled,the force between them will become: |
A. Double
B. Half
C. One third
D. One fourth
|
| 2 | Tick the series which lie/s in. the infra-red region. |
A. Pfund series
B. Brackett series
C. Paschen series
D. All of these
|
| 3 | The life time of metastable state is equal to |
A. Life time of excited state
B. Greater than by excited state
C. Zero
D. Less than by excited state
|
| 4 | X-rays can penetrate in a solid matte through a distance of several: |
A. Kilo metres
B. Metres
C. Centimeters
D. A few angstroms
|
| 5 | The natural arrangement of colours in the spectrum of white light spectrum is |
A. VIBGYOR
B. ROYBGIV
C. ROYBIGV
D. BIGROYV
|
| 6 | The results of spectra obtained by Blamer were expressed in 1896 by |
A. Bohr
B. Rydberg
C. Planck
D. Rutherford
|
| 7 | Photons must have energy equal to |
A. ev
B. En
C. hf
D. None of these
|
| 8 | The results of spectra obtained by Balmer were expressed in 1896 by: |
A.
Bohr
B. Rydberg
C. Planck
D. Rutherford
|
| 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 |
A. Frequency
B. Penetrating power
C. Energy
D. Method of creation
|
| 10 | Tick the series which lies in the visible region: |
A. Lyman series
B. Balmer series
C. Paschen series
D. Brackett series
|
Test Questions
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