Home
News
Colleges
Courses
Admission
Lectures
Online Test
Past Papers
Date Sheets
Results
Study Abroad
Jobs
Tutors
More
Apps
MCQ's Test For ECAT Physics Chapter 20 Atomic Spectra
Try The MCQ's Test For ECAT Physics Chapter 20 Atomic Spectra
-
Total Questions15
-
Time Allowed20
ECAT Physics Chapter 20 Atomic Spectra
00:00
Question # 1
X-rays produced in a tube operating at 105V. The speed of X-rays produced is
Question # 2
The results of spectra obtained by Blamer were expressed in 1896 by
Question # 3
Atoms of hydrogen gas can be excited by passing electric current through it when the gas is filled into the discharge tube at a pressure which is
Question # 4
Balmer series lies in that region of electromagnetic wave spectrum which is called:
Question # 5
X-ray are also known as
Question # 6
The holes created in the L and M shells are occupied by transitions of:
Question # 7
Static electricity is produced by the transfer of:
Question # 8
In flesh, light element like carbon, hydrogen and oxygen predominate. Three elements allows ______ amount of incident X-ray to pass through them
Question # 9
The results of spectra obtained by Balmer were expressed in 1896 by:
Question # 10
Gaussian surface is always:
Question # 11
If the distance between two charges is doubled,the force between them will become:
Question # 12
Spectrum represents the number of component colours present in certain light in terms of:
Question # 13
Tick the series which lie/s in. the infra-red region.
Question # 14
The value of the metastable state for Neon is
Question # 15
The photocopying process is called:
Top Scorers Of ECAT Physics Chapter 20 Atomic Spectra MCQ`s Test
-
H Heer 07 - Jan - 2024 00 Min 36 Sec 60/60 -
U Umer Usman 09 - Mar - 2024 01 Min 35 Sec 60/60 -
M Muneeb ur Rehman 28 - Jun - 2026 01 Min 36 Sec 60/60 -
I Ismailkhan Khanlala 17 - Aug - 2023 00 Min 42 Sec 55/60 -
F Fadi King 04 - Nov - 2025 01 Min 24 Sec 52/60 -
A Atal Khan 15 - Aug - 2023 00 Min 24 Sec 50/60 -
U Unknown 07 - Jan - 2024 01 Min 10 Sec 50/60 -
Z Zahida Attique 21 - May - 2024 01 Min 29 Sec 50/60 -
Z Zia Ullah Chahal 08 - Mar - 2024 02 Min 07 Sec 45/60 -
U Understand Islam Understand Islam 16 - Jul - 2024 00 Min 03 Sec 40/60 -
S Sanjana Athwani 19 - Jan - 2024 03 Min 10 Sec 40/60 -
S Shaheer Mustafa 07 - Mar - 2024 03 Min 29 Sec 40/60 -
B Bushra Rehmat 14 - Jul - 2023 03 Min 29 Sec 40/60 -
A Abdullah Baloch 10 - Aug - 2024 03 Min 51 Sec 40/60 -
M Mian House 31 - May - 2024 04 Min 11 Sec 40/60
ECAT Physics Chapter 20 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Graph of Black body radiation is example of |
A. Band spectra
B. Continuo's spectra
C. Line spectra
D. All
|
| 2 | The shell closer to the nucleus is called: |
A. N shell
B.
L shell
C. K shell
D. M shell
|
| 3 | The He-Ne laser discharge tube is filled with: |
A. 85% He
B. 15% He
C. 50% He
D. 60% He
|
| 4 | Gaussian surface is always: |
A. Rectangular
B. Spherical
C. Cylinder
D. Box shape
|
| 5 | The first shell near the neucles is |
A. L-shell
B. X-shell
C. N-shell
D. M-shell
|
| 6 | Spectrum represents the number of component colours present in certain light in terms of: |
A. Wavelength
B. Frequency
C. Energy
D. Both (A) and (B)
|
| 7 | X-ray are also known as |
A. Roentgen rays
B. Maxwell rays
C. Plank range
D. Einstein rays
|
| 8 | Atoms of hydrogen gas can be excited by passing electric current through it when the gas is filled into the discharge tube at a pressure which is |
A. Less than atmospheric pressure
B. Much less than atmospheric pressure
C. Greater than atmospheric pressure
D. Much greater than atmospheric pressure
|
| 9 | The process of formation of spectrum is called: |
A. Interference
B. Spectroscopy
C. Dispersion
D. Reflection
|
| 10 | 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
|
Test Questions
Share your comments & questions here
No comments yet. Be the first to comment!