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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 He-Ne laser discharge tube is filled with:
Question # 2
The results of spectra obtained by Balmer were expressed in 1896 by:
Question # 3
An electron of the hydrogen atom in the second orbit is called its:
Question # 4
The first shell near the neucles is
Question # 5
Selenium is:
Question # 6
X-rays produced in a tube operating at 105V. The speed of X-rays produced is
Question # 7
Braking radiation causes:
Question # 8
Coulomb multiplied by volt by volt gives the unit called:
Question # 9
Energy required by an electron revolving in certain orbit to jump to an excited state is called:
Question # 10
An compared to solid matter, a crack or an air bubble allows:
Question # 11
Lyman series in the spectrum of hydrogen exists in the :
Question # 12
Gaussian surface is always:
Question # 13
X-rays can penetrate in a solid matte through a distance of several:
Question # 14
The life time of metastable state is equal to
Question # 15
The results of spectra obtained by Blamer were expressed in 1896 by
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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 | By CAT scans, we can detect the density difference of the order of: |
A. 1%
B. 20%
C. 30%
D. 50%
|
| 3 | 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
|
| 4 | 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
|
| 5 | Tick the series which lies in the visible region: |
A. Lyman series
B. Balmer series
C. Paschen series
D. Brackett series
|
| 6 | The inkjet printer eject a thin stream of: |
A. Water
B. Oil
C. Ink
D. Any above
|
| 7 | 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
|
| 8 | 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
|
| 9 | In case of braking radiations, when the rate of deceleration is very large, the emitted radiation corresponds to: |
A. Short wavelength
B. Large wavelength
C. Very large wavelenth
D. Low frequency
|
| 10 | 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
|
Test Questions
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