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
Laser is a beam of:
Question # 2
The first shell near the neucles is
Question # 3
The minimum wavelength of X-rays produced of 1KV potential difference is applied across the anode and cathode of the tube is
Question # 4
The range of wavelengths of colurs in the visible colours is
Question # 5
The inkjet printer eject a thin stream of:
Question # 6
Static electricity is produced by the transfer of:
Question # 7
In case of braking radiations, when the rate of deceleration is very large, the emitted radiation corresponds to:
Question # 8
X-ray are also known as
Question # 9
Photons must have energy equal to
Question # 10
If the distance between two charges is doubled,the force between them will become:
Question # 11
Coulomb multiplied by volt by volt gives the unit called:
Question # 12
Gaussian surface is always:
Question # 13
By CAT scans, we can detect the density difference of the order of:
Question # 14
We can excite an atom by
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 -
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 -
M MusiCore 20 - Mar - 2023 04 Min 38 Sec 40/60
ECAT Physics Chapter 20 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | 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
|
| 2 | CT scanning is the abbreviated name of |
A. Computed Technology
B. Computed Technique
C. Computed Technology
D. Computerized Technique
|
| 3 | 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
|
| 4 | 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
|
| 5 | The electric field lines start from: |
A. Positive charge
B. Negative charge
C. Either A and B
D. Neutron
|
| 6 | 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 |
A. Frequency
B. Penetrating power
C. Energy
D. Method of creation
|
| 7 | The He-Ne laser discharge tube is filled with: |
A. 85% He
B. 15% He
C. 50% He
D. 60% He
|
| 8 | Ultraviolet region lies in ______ series |
A. Layman
B. Balmer
C. P fund
D. B racket
|
| 9 | 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
|
| 10 | 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
|
Test Questions
Share your comments & questions here
Please sign in to post a comment
No comments yet. Be the first to comment!