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

Energy required by an electron revolving in certain orbit to jump to an excited state is called:

Question # 2

Balmer series was identified in:

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

Static electricity is produced by the transfer of:

Question # 7

The inkjet printer eject a thin stream of:

Question # 8

Braking radiation causes:

Question # 9

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

Question # 10

Ultraviolet region lies in ______ series

Question # 11

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

Question # 12

The process of formation of spectrum is called:

Question # 13

Tick the series which lie/s in. the infra-red region.

Question # 14

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

Question # 15

CT scanning is the abbreviated name of

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ECAT Physics Chapter 20 Important MCQ's

Sr.# Question Answer
1 Selenium is:
A. An insulator
B. A conductor
C. Both A and B
D. Excellent conductor
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 Ultraviolet region lies in ______ series
A. Layman
B. Balmer
C. P fund
D. B racket
5 The results of spectra obtained by Blamer were expressed in 1896 by
A. Bohr
B. Rydberg
C. Planck
D. Rutherford
6 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
7 Tick the series which lies in the visible region:
A. Lyman series
B. Balmer series
C. Paschen series
D. Brackett series
8 The inkjet printer eject a thin stream of:
A. Water
B. Oil
C. Ink
D. Any above
9 X-ray are also known as
A. Roentgen rays
B. Maxwell rays
C. Plank range
D. Einstein rays
10 Photons must have energy equal to
A. ev
B. En
C. hf
D. None of these

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