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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
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Question # 1
The formula of Brackett series can be obtained by putting in the general formula, the value of n equal to:
Question # 2
X-rays produced in a tube operating at 105V. The speed of X-rays produced is
Question # 3
The first shell near the neucles is
Question # 4
Lyman series in the spectrum of hydrogen exists in the :
Question # 5
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 # 6
Photons must have energy equal to
Question # 7
The inkjet printer eject a thin stream of:
Question # 8
A metastable stae:
Question # 9
Spectrum represents the number of component colours present in certain light in terms of:
Question # 10
Coulomb multiplied by volt by volt gives the unit called:
Question # 11
CT scanning is the abbreviated name of
Question # 12
Static electricity is produced by the transfer of:
Question # 13
The results of spectra obtained by Balmer were expressed in 1896 by:
Question # 14
By CAT scans, we can detect the density difference of the order of:
Question # 15
The process of formation of spectrum is called:
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ECAT Physics Chapter 20 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | By CAT scans, we can detect the density difference of the order of: |
A. 1%
B. 20%
C. 30%
D. 50%
|
| 2 | X-rays can penetrate in a solid matte through a distance of several: |
A. Kilo metres
B. Metres
C. Centimeters
D. A few angstroms
|
| 3 | 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
|
| 4 | 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
|
| 5 | The first shell near the neucles is |
A. L-shell
B. X-shell
C. N-shell
D. M-shell
|
| 6 | Coulomb multiplied by volt by volt gives the unit called: |
A. farad
B. Ohm
C. Second
D. joule
|
| 7 | Graph of Black body radiation is example of |
A. Band spectra
B. Continuo's spectra
C. Line spectra
D. All
|
| 8 | The inkjet printer eject a thin stream of: |
A. Water
B. Oil
C. Ink
D. Any above
|
| 9 | The spectrum emitted from hydrogen filled discharge tube is: |
A. Line spectrum
B. Discrete spectrum
C. And spectrum
D. Absorption spectrum
|
| 10 | The results of spectra obtained by Balmer were expressed in 1896 by: |
A.
Bohr
B. Rydberg
C. Planck
D. Rutherford
|
Test Questions
Share your comments & questions here
Salmankhan
01 Feb 2018Some mcqs having wrong answers.