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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 series which was identified in the spectrum of hydrogen is called:
Question # 2
Balmer series was identified in:
Question # 3
X-ray are also known as
Question # 4
Laser is a beam of:
Question # 5
Static electricity is produced by the transfer of:
Question # 6
Selenium is:
Question # 7
The natural arrangement of colours in the spectrum of white light spectrum is
Question # 8
Lyman series in the spectrum of hydrogen exists in the :
Question # 9
Coulomb multiplied by volt by volt gives the unit called:
Question # 10
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 # 11
Photons must have energy equal to
Question # 12
Spectrum represents the number of component colours present in certain light in terms of:
Question # 13
X-rays can penetrate in a solid matte through a distance of several:
Question # 14
An electron of the hydrogen atom in the second orbit is called its:
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 | CT scanning is the abbreviated name of |
A. Computed Technology
B. Computed Technique
C. Computed Technology
D. Computerized Technique
|
| 2 | 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)
|
| 3 | 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
|
| 4 | The lasing or active medium in He-Ne laser discharge tube is: |
A. Nitrogen
B. Helium
C. Hydrogen
D. Neon
|
| 5 | 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
|
| 6 | Braking radiation causes: |
A. Continuous spectrum
B. Line Spectrum
C. Band spectrum
D. Discrete specturm
|
| 7 | 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
|
| 8 | The shell closer to the nucleus is called: |
A. N shell
B.
L shell
C. K shell
D. M shell
|
| 9 | Gaussian surface is always: |
A. Rectangular
B. Spherical
C. Cylinder
D. Box shape
|
| 10 | Coulomb multiplied by volt by volt gives the unit called: |
A. farad
B. Ohm
C. Second
D. joule
|
Test Questions
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