Home
News
Colleges
Courses
Admission
Lectures
Online Test
Past Papers
Date Sheets
Results
Study Abroad
Jobs
Tutors
More
Apps
.jpg)
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
Physics ECAT Pre Engineering Chapter 20 Atomic Spectra
00:00
Question # 1
In case of braking radiations, when the rate of deceleration is very large, the emitted radiation corresponds to:
Question # 2
Graph of Black body radiation is example of
Question # 3
The results of spectra obtained by Blamer were expressed in 1896 by
Question # 4
An electron of the hydrogen atom in the second orbit is called its:
Question # 5
The process of formation of spectrum is called:
Question # 6
The first series which was identified in the spectrum of hydrogen is called:
Question # 7
The life time of metastable state is equal to
Question # 8
The first shell near the neucles is
Question # 9
By CAT scans, we can detect the density difference of the order of:
Question # 10
If the distance between two charges is doubled,the force between them will become:
Question # 11
Balmer series lies in that region of electromagnetic wave spectrum which is called:
Question # 12
Static electricity is produced by the transfer of:
Question # 13
Laser is a beam of:
Question # 14
The spectrum emitted from hydrogen filled discharge tube is:
Question # 15
The results of spectra obtained by Balmer were expressed in 1896 by:
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 -
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 -
F Fizza Khalid 03 - Mar - 2024 01 Min 13 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 -
A Abdullah Zubair 11 - Jan - 2025 03 Min 10 Sec 45/60
ECAT Physics Chapter 20 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Static electricity is produced by the transfer of: |
A. Electrons
B. Protons
C. One fluid
D. Two fluid
|
| 2 | The transitions of electrons in the hydrogen atom result in the emission of spectral lies in the: |
A. Ultra red region
B. Visible region
C. Ultraviolet region
D. Any of these
|
| 3 | 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
|
| 4 | An electron of the hydrogen atom in the second orbit is called its: |
A. Ground state
B. Excited state
C. Ionized state
D. Any of these
|
| 5 | Selenium is: |
A. An insulator
B. A conductor
C. Both A and B
D. Excellent conductor
|
| 6 | We can excite an atom by |
A. Bombardment of particles
B. Radiating photons
C. Providing potential difference
D. All answer are true
|
| 7 | Lyman series in the spectrum of hydrogen exists in the : |
A. Infra-red region
B. Visible region
C. Ultraviolet region
D. Both(A) and (B)
|
| 8 | The value of the metastable state for Neon is |
A. 20.66eV
B. 20.61eV
C. 19.23eV
D. 18.70eV
|
| 9 | Tick the series which lies in the visible region: |
A. Lyman series
B. Balmer series
C. Paschen series
D. Brackett series
|
| 10 | Tick the series which lie/s in. the infra-red region. |
A. Pfund series
B. Brackett series
C. Paschen series
D. All of these
|
Test Questions
Share your comments & questions here
Salmankhan
01 Feb 2018Some mcqs having wrong answers.