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

  • Total Questions15

  • Time Allowed20

Start Test Download PDF

Physics ECAT Pre Engineering Chapter 20 Atomic Spectra

00:00
Question # 1

Gaussian surface is always:

Question # 2

Ultraviolet region lies in ______ series

Question # 3

The life time of metastable state is equal to

Question # 4

The photocopying process is called:

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

The shell closer to the nucleus is called:

Question # 9

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

Question # 10

Graph of Black body radiation is example of

Question # 11

The results of spectra obtained by Balmer were expressed in 1896 by:

Question # 12

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

Question # 13

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

Question # 14

The range of wavelengths of colurs in the visible colours is

Question # 15

Laser is a beam of:

Submit

Prepare Complete Set Wise Physics ECAT Pre Engineering Chapter 20 Atomic Spectra MCQs Online With Answers


Topic Test

00:00
Submit

Top Scorers Of Physics ECAT Pre Engineering Chapter 20 Atomic Spectra MCQ`s Test

  • A
    Arian Ahmed 12 - Mar - 2024 00 Min 03 Sec 60/60
  • F
    Farzand Shah Farzand Shah 01 - Jun - 2024 00 Min 44 Sec 60/60
  • S
    suzi 11 - Feb - 2026 00 Min 45 Sec 60/60
  • B
    Bilal Javed 07 - Mar - 2024 01 Min 33 Sec 60/60
  • H
    Huzaifa Asim 26 - May - 2024 13 Min 32 Sec 60/60
  • M
    M Umer Arain 24 - Dec - 2024 00 Min 07 Sec 55/60
  • A
    Anibullah Anib 07 - Mar - 2024 01 Min 57 Sec 55/60
  • T
    Tamshi Sohail 03 - May - 2024 02 Min 37 Sec 55/60
  • C
    Chhabibullah1492 Habib 07 - Mar - 2024 05 Min 43 Sec 55/60
  • M
    Malaika Waqar 23 - Apr - 2024 06 Min 21 Sec 55/60
  • S
    Shamshad 27 - May - 2024 01 Min 13 Sec 50/60
  • S
    Sammad Ali 30 - May - 2024 01 Min 20 Sec 50/60
  • A
    Ayesha Ch 06 - Mar - 2024 01 Min 33 Sec 50/60
  • M
    m imran 18 - May - 2024 02 Min 16 Sec 50/60
  • C
    Computer mail 28 - Apr - 2026 03 Min 26 Sec 48/60

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 The process of formation of spectrum is called:
A. Interference
B. Spectroscopy
C. Dispersion
D. Reflection
3 Static electricity is produced by the transfer of:
A. Electrons
B. Protons
C. One fluid
D. Two fluid
4 An compared to solid matter, a crack or an air bubble allows:
A. Great amount of X-rays to pass
B. Smallast amount of X-rays to pass
C. Very samall amount of X-rays to pass
D. Any of these
5 The minimum wavelength of X-rays produced of 1KV potential difference is applied across the anode and cathode of the tube is
A. 1.24 x 10-10m
B. 7.92 x 10-20m
C. 2.78 x 10-14m
D. 3.88 x 10-11m
6 By CAT scans, we can detect the density difference of the order of:
A. 1%
B. 20%
C. 30%
D. 50%
7 The shell closer to the nucleus is called:
A. N shell
B.
L shell
C. K shell
D. M shell
8 Graph of Black body radiation is example of
A. Band spectra
B. Continuo's spectra
C. Line spectra
D. All
9 The inkjet printer eject a thin stream of:
A. Water
B. Oil
C. Ink
D. Any above
10 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

Test Questions