ECAT Pre Computer Science Chapter 20 MCQ Test With Answer

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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ECAT Physics Chapter 20 Atomic Spectra

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Question # 1

The natural arrangement of colours in the spectrum of white light spectrum is

Question # 2

The results of spectra obtained by Blamer were expressed in 1896 by

Question # 3

An compared to solid matter, a crack or an air bubble allows:

Question # 4

X-rays produced in a tube operating at 105V. The speed of X-rays produced is

Question # 5

Spectrum represents the number of component colours present in certain light in terms of:

Question # 6

The lasing or active medium in He-Ne laser discharge tube is:

Question # 7

The life time of metastable state is equal to

Question # 8

Static electricity is produced by the transfer of:

Question # 9

In flesh, light element like carbon, hydrogen and oxygen predominate. Three elements allows ______ amount of incident X-ray to pass through them

Question # 10

The photocopying process is called:

Question # 11

CT scanning is the abbreviated name of

Question # 12

Laser is a beam of:

Question # 13

Graph of Black body radiation is example of

Question # 14

The transitions of electrons in the hydrogen atom result in the emission of spectral lies in the:

Question # 15

Braking radiation causes:

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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 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
3 Graph of Black body radiation is example of
A. Band spectra
B. Continuo's spectra
C. Line spectra
D. All
4 CT scanning is the abbreviated name of
A. Computed Technology
B. Computed Technique
C. Computed Technology
D. Computerized Technique
5 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
6 X-rays produced in a tube operating at 105V. The speed of X-rays produced is
A. 3 x 108m/s
B. 3.1 x 108m/s
C. 2.8 x 108m/s
D. 1.88 x 108m/s
7 A metastable stae:
A. Is an excited state
B. Is that in which excited electron is stable
C. Is that in which excited electron is usually unstable
D. Means a time interval of 10-8second
8 The shell closer to the nucleus is called:
A. N shell
B.
L shell
C. K shell
D. M shell
9 The results of spectra obtained by Blamer were expressed in 1896 by
A. Bohr
B. Rydberg
C. Planck
D. Rutherford
10 An compared to solid matter, a crack or an air bubble allows:
A. Great amount of X-rays to pass
B. Smallast amount of X-rays to pass
C. Very samall amount of X-rays to pass
D. Any of these

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