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 He-Ne laser discharge tube is filled with:

Question # 2

Graph of Black body radiation is example of

Question # 3

X-ray are also known as

Question # 4

The first shell near the neucles is

Question # 5

The process of formation of spectrum is called:

Question # 6

We can excite an atom by

Question # 7

Gaussian surface is always:

Question # 8

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

Question # 9

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

Question # 10

Tick the series which lies in the visible region:

Question # 11

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

Question # 12

Ultraviolet region lies in ______ series

Question # 13

Coulomb multiplied by volt by volt gives the unit called:

Question # 14

The range of wavelengths of colurs in the visible colours is

Question # 15

The shell closer to the nucleus is called:

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ECAT Physics Chapter 20 Important MCQ's

Sr.# Question Answer
1 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
2 Ultraviolet region lies in ______ series
A. Layman
B. Balmer
C. P fund
D. B racket
3 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
4 Braking radiation causes:
A. Continuous spectrum
B. Line Spectrum
C. Band spectrum
D. Discrete specturm
5 The results of spectra obtained by Blamer were expressed in 1896 by
A. Bohr
B. Rydberg
C. Planck
D. Rutherford
6 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
7 The photocopying process is called:
A. Geography
B. Sonography
C. Xerography
D. Zerography
8 Tick the series which lies in the visible region:
A. Lyman series
B. Balmer series
C. Paschen series
D. Brackett series
9 The shell closer to the nucleus is called:
A. N shell
B.
L shell
C. K shell
D. M shell
10 The first series which was identified in the spectrum of hydrogen is called:
A. Lyman series
B. Balmer series
C. Paschen series
D. Brackett series

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