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

Balmer series lies in that region of electromagnetic wave spectrum which is called:

Question # 2

Ultraviolet region lies in ______ series

Question # 3

CT scanning is the abbreviated name of

Question # 4

An electron of the hydrogen atom in the second orbit is called its:

Question # 5

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

Question # 6

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

Question # 7

The first shell near the neucles is

Question # 8

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

Question # 9

Tick the series which lies in the visible region:

Question # 10

A metastable stae:

Question # 11

The first series which was identified in the spectrum of hydrogen is called:

Question # 12

X-ray are also known as

Question # 13

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

Question # 14

The spectrum emitted from hydrogen filled discharge tube is:

Question # 15

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

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ECAT Physics Chapter 20 Important MCQ's

Sr.# Question Answer
1 Laser is a beam of:
A. Visible light
B. Infra red light
C. Ultra violet light
D. Violet light only
2 Photons must have energy equal to
A. ev
B. En
C. hf
D. None of these
3 The formula of Brackett series can be obtained by putting in the general formula, the value of n equal to:
A.
one
B. two
C. three
D. four
4 The process of formation of spectrum is called:
A. Interference
B. Spectroscopy
C. Dispersion
D. Reflection
5 We can excite an atom by
A. Bombardment of particles
B. Radiating photons
C. Providing potential difference
D. All answer are true
6 Lyman series in the spectrum of hydrogen exists in the :
A. Infra-red region
B. Visible region
C. Ultraviolet region
D. Both(A) and (B)
7 The shell closer to the nucleus is called:
A. N shell
B.
L shell
C. K shell
D. M shell
8 The photocopying process is called:
A. Geography
B. Sonography
C. Xerography
D. Zerography
9 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
10 Ultraviolet region lies in ______ series
A. Layman
B. Balmer
C. P fund
D. B racket

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