ECAT Pre Engineering Physics Chapter 20 MCQ Test With Answer

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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Physics ECAT Pre Engineering Chapter 20 Atomic Spectra

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Question # 1

CT scanning is the abbreviated name of

Question # 2

Photons must have energy equal to

Question # 3

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

Question # 4

The range of wavelengths of colurs in the visible colours is

Question # 5

The spectrum emitted from hydrogen filled discharge tube is:

Question # 6

If the distance between two charges is doubled,the force between them will become:

Question # 7

Static electricity is produced by the transfer of:

Question # 8

Tick the series which lies in the visible region:

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

X-ray are also known as

Question # 11

The life time of metastable state is equal to

Question # 12

The shell closer to the nucleus is called:

Question # 13

Laser is a beam of:

Question # 14

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 # 15

The first shell near the neucles is

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ECAT Physics Chapter 20 Important MCQ's

Sr.# Question Answer
1 Ultraviolet region lies in ______ series
A. Layman
B. Balmer
C. P fund
D. B racket
2 The spectrum emitted from hydrogen filled discharge tube is:
A. Line spectrum
B. Discrete spectrum
C. And spectrum
D. Absorption spectrum
3 The photocopying process is called:
A. Geography
B. Sonography
C. Xerography
D. Zerography
4 The He-Ne laser discharge tube is filled with:
A. 85% He
B. 15% He
C. 50% He
D. 60% He
5 Braking radiation causes:
A. Continuous spectrum
B. Line Spectrum
C. Band spectrum
D. Discrete specturm
6 The first shell near the neucles is
A. L-shell
B. X-shell
C. N-shell
D. M-shell
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 CT scanning is the abbreviated name of
A. Computed Technology
B. Computed Technique
C. Computed Technology
D. Computerized Technique
10 If the distance between two charges is doubled,the force between them will become:
A. Double
B. Half
C. One third
D. One fourth

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