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

00:00
Question # 1

The shell closer to the nucleus is called:

Question # 2

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

Question # 3

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

Question # 4

The electric field lines start from:

Question # 5

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

Question # 6

X-ray are also known as

Question # 7

By CAT scans, we can detect the density difference of the order of:

Question # 8

The range of wavelengths of colurs in the visible colours is

Question # 9

Balmer series was identified in:

Question # 10

We can excite an atom by

Question # 11

X-rays can penetrate in a solid matte through a distance of several:

Question # 12

The formula of Brackett series can be obtained by putting in the general formula, the value of n equal to:

Question # 13

The inkjet printer eject a thin stream of:

Question # 14

The He-Ne laser discharge tube is filled with:

Question # 15

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

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ECAT Physics Chapter 20 Important MCQ's

Sr.# Question Answer
1 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
2 The first shell near the neucles is
A. L-shell
B. X-shell
C. N-shell
D. M-shell
3 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
4 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
5 Balmer series was identified in:
A. 1685
B. 1785
C. 1885
D. 1985
6 X-ray are also known as
A. Roentgen rays
B. Maxwell rays
C. Plank range
D. Einstein rays
7 The natural arrangement of colours in the spectrum of white light spectrum is
A. VIBGYOR
B. ROYBGIV
C. ROYBIGV
D. BIGROYV
8 Laser is a beam of:
A. Visible light
B. Infra red light
C. Ultra violet light
D. Violet light only
9 Photons must have energy equal to
A. ev
B. En
C. hf
D. None of these
10 The He-Ne laser discharge tube is filled with:
A. 85% He
B. 15% He
C. 50% He
D. 60% He

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