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

Selenium is:

Question # 2

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 # 3

CT scanning is the abbreviated name of

Question # 4

The process of formation of spectrum is called:

Question # 5

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

Question # 6

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

Question # 7

The photocopying process is called:

Question # 8

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

Question # 9

Lyman series in the spectrum of hydrogen exists in the :

Question # 10

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

Question # 11

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

Question # 12

The holes created in the L and M shells are occupied by transitions of:

Question # 13

Photons must have energy equal to

Question # 14

The value of the metastable state for Neon is

Question # 15

Graph of Black body radiation is example of

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ECAT Physics Chapter 20 Important MCQ's

Sr.# Question Answer
1 The range of wavelengths of colurs in the visible colours is
A. 140 nm to 456 nm
B. 10 nm to 56 nm
C. 410 nm to 656 nm
D. 910 nm to 956 nm
2 The results of spectra obtained by Balmer were expressed in 1896 by:
A.
Bohr
B. Rydberg
C. Planck
D. Rutherford
3 Static electricity is produced by the transfer of:
A. Electrons
B. Protons
C. One fluid
D. Two fluid
4 In helium Neon Laser Neon = 15% and Helium = 85% used. The lasing gas this unit is
A. Helium
B. Neon
C. Both
D. None of these
5 The inkjet printer eject a thin stream of:
A. Water
B. Oil
C. Ink
D. Any above
6 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
7 The value of the metastable state for Neon is
A. 20.66eV
B. 20.61eV
C. 19.23eV
D. 18.70eV
8 The first shell near the neucles is
A. L-shell
B. X-shell
C. N-shell
D. M-shell
9 Braking radiation causes:
A. Continuous spectrum
B. Line Spectrum
C. Band spectrum
D. Discrete specturm
10 Balmer series lies in that region of electromagnetic wave spectrum which is called:
A. Visible region
B. Invisible region
C. Infra-red region
D. ultraviolet region

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