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 19 Dawn of Modern Physics
Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 19 Dawn of Modern Physics
-
Total Questions15
-
Time Allowed20
Physics ECAT Pre Engineering Chapter 19 Dawn of Modern Physics
00:00
Question # 1
Compton was awarded Nobel prize in physics in
Question # 2
The idea of quantization of energy was proposed by:
Question # 3
The year when A.H. compton was awarded Nobel Prize is:
Question # 4
A non-inertial frame of reference is one, in which
Question # 5
The energy of the 4th orbit in hydrogen atom is
Question # 6
If a body reaches a speed equal to the speed of light, then its mass will became
Question # 7
The location and speed anywhere on earth can now be determined using relativistic effects by NAVISTAR to an accuracy of
Question # 8
The threshold frequency of sodium is 6 x 106MHz. The cut-off wavelength for this metal will be
Question # 9
The analysis of the distribution of wavelengths of the radiation emitted from a hot body set the foundation of new mechanics, known as
Question # 10
In order to produce pair production, a photon must have a energy
Question # 11
The special theory of relatively treats the problems involving:
Question # 12
Photoelectric effect takes place with a photon of:
Question # 13
A particle having mass and charge equal to that of an electron is called:
Question # 14
The Nobel Prize on the explanation of photoelectric effect was awarded to:
Question # 15
When a platinum wire is heated, it appears dull red at about
Prepare Complete Set Wise Physics ECAT Pre Engineering Chapter 19 Dawn of Modern Physics MCQs Online With Answers
Top Scorers Of Physics ECAT Pre Engineering Chapter 19 Dawn of Modern Physics MCQ`s Test
-
F Farzand Shah Farzand Shah 01 - Jun - 2024 01 Min 03 Sec 60/60 -
D David Navid 28 - Mar - 2024 02 Min 29 Sec 60/60 -
M Maryam afzal Maryam afzal 25 - May - 2024 09 Min 18 Sec 60/60 -
A Arian Ahmed 09 - Mar - 2024 00 Min 27 Sec 55/60 -
H Huzaifa Asim 26 - May - 2024 09 Min 46 Sec 55/60 -
S suzi 11 - Feb - 2026 00 Min 43 Sec 52/60 -
Z Zainab Tahira 16 - Jun - 2026 02 Min 41 Sec 52/60 -
B Bilal Javed 02 - Jun - 2024 03 Min 49 Sec 50/60 -
A Abdullah Zubair 08 - Jan - 2025 04 Min 17 Sec 50/60 -
M Muhammad Sufyan 01 - Jun - 2024 00 Min 08 Sec 45/60 -
M Maida Naveed 24 - May - 2024 03 Min 14 Sec 45/60 -
U umaima mubashar 31 - May - 2024 06 Min 17 Sec 45/60 -
F Fiza Saleem 03 - Dec - 2024 09 Min 36 Sec 45/60 -
T Tamshi Sohail 02 - May - 2024 03 Min 48 Sec 40/60 -
R rubina kousar 01 - Jun - 2024 04 Min 22 Sec 40/60
ECAT Physics Chapter 19 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | A non-inertial frame of reference is one, in which |
A. law of inertial is valid
B. all laws of physics are the same in all frames
C. a>0 or a<0
D. a=0
|
| 2 | The energy of the 4th orbit in hydrogen atom is |
A. 2.5 ev
B. - 3.5 ev
C. -0.85 ev
D. -13.6 ev
|
| 3 | Momentum is a parameter associated with |
A. wave motion
B. particle motion
C. neither wave nor particle motion
D. none of these
|
| 4 | The value of the Stephen's constant for black body radiations is given by |
A. 5.6 x 108Wm-2K-4
B. 5.67 x 10-8Wm-2K-4
C. 2.9 x 10-3mK
D. 2.9 x 103mK
|
| 5 | 0.1 kg mass will be equivalent to the energy |
A. 9 x 1015J
B. 5 x 108J
C. 6 x 1016J
D. 9 x 10-16J
|
| 6 | According to the special theory of relativity, time is |
A. absolute quantity
B. not absolute quantity
C. constant quantity
D. none of these
|
| 7 | When low energy photon interact with a metal,which of the following effect is likely to be taken place |
A. pair production
B. photoelectric
C. Compton effect
D. None of these
|
| 8 | The whole shape of the black body spectrum for all wavelengths was explained by the formula proposed by |
A. Max plank
B. Newton
C. Einstein
D. J.J. Thomson
|
| 9 | The emission of electrons from a metal surface when exposed to light of suitable frequency is called the |
A. pair production
B. Compton effect
C. photoelectric effect
D. relativity
|
| 10 | The positron was discovered by: |
A. In cosmic radiation
B. In 1932
C. By Carl Anderson
D. All above
|
Test Questions
Share your comments & questions here
hasnain
30 May 2018no