.jpg)
Home
News
Colleges
Courses
Admission
Lectures
Online Test
Past Papers
Date Sheets
Results
Study Abroad
Jobs
Tutors
More
Apps
.gif)
MCQ's Test For ECAT Physics Chapter 9 Physical Optics
Try The MCQ's Test For ECAT Physics Chapter 9 Physical Optics
-
Total Questions15
-
Time Allowed20
ECAT Physics Chapter 9 Physical Optics
00:00
Question # 1
The appearance of the colour in the soap (oil) film results from:
Question # 2
The magnifier forms a virtual image of the object at:
Question # 3
The least distance of distinct vision is:
Question # 4
In the formula R = N x m for diffraction grating, N denotes:
Question # 5
The cause of mirage observed in deserts in bright sunlight is due to
Question # 6
Light waves are:
Question # 7
If the object is situated at focus of a convex lens, then its image is formed at:
Question # 8
Light appears to travel in straight line because
Question # 9
Conventionally, all the distance p, q, f are measured from _____ of the lens:
Question # 10
Wave length of light, on the average, is given by:
Question # 11
In case of point, source of light shape of wavefront is:
Question # 12
A grating with high resolving power can distinguish _______ difference in wavelengths :
Question # 13
A virtual image is formed when object is placed:
Question # 14
The contrast in the fringes in an interference pattern depends upon
Question # 15
According to Huygen's principle
Top Scorers Of ECAT Physics Chapter 9 Physical Optics MCQ`s Test
-
H Heer 21 - Jan - 2024 00 Min 29 Sec 60/60 -
V Vertex Gaming 16 - Jul - 2024 00 Min 47 Sec 55/60 -
T Tasser Haider 31 - May - 2024 01 Min 13 Sec 50/60 -
M Maham Mehar 31 - Jul - 2024 02 Min 42 Sec 50/60 -
M Manoush Fatima 31 - May - 2024 03 Min 21 Sec 50/60 -
A Abdullah Baloch 27 - Jul - 2024 03 Min 48 Sec 50/60 -
E Esha Azeem 03 - Dec - 2023 15 Min 03 Sec 50/60 -
M Muhammad Hashim 02 - Jun - 2024 02 Min 01 Sec 45/60 -
A Ayan Shuaib 29 - Jan - 2024 02 Min 23 Sec 45/60 -
M Muhammad Abdur.Rahman Khan 30 - Aug - 2024 03 Min 51 Sec 45/60 -
H Hira Maqsood 20 - Feb - 2024 07 Min 03 Sec 45/60 -
S suzi 09 - Feb - 2026 01 Min 42 Sec 44/60 -
M M.Faiq 22 - May - 2024 02 Min 46 Sec 40/60 -
M Muhammad Sadaqat 10 - Mar - 2023 03 Min 54 Sec 40/60 -
H Haseeb Ur Rehman raja 25 - Jun - 2024 05 Min 10 Sec 40/60
ECAT Physics Chapter 9 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | According to Huygen's principle |
A. light travels in straight line
B. Light is a transvers wave
C. Light has dual nature
D. All points on the primary wave-front are the sources of secondary wavelets
|
| 2 | The ratio of the diameter of two convex lenses is _____-the ratio of their focal lengths: |
A. Greater than
B. Less than
C. Equal to
D. None of these
|
| 3 | Conventionally, all the distance p, q, f are measured from _____ of the lens: |
A. Focus
B. Optical center
C. Edges
D. None of these
|
| 4 | The distance from eye to near point is taken as: |
A. 10 cm
B. 15 cm
C. 20 cm
D. 25 cm
|
| 5 | Stars twinkle due to |
A. The fact that they do not emit light continuously
B. The refractive index of earth's atmosphere fluctuates
C. The Star's atmosphere absorbs its light intermittently
D. None of these
|
| 6 | Wave length of that color as compared to that of violet color is: |
A. Smaller
B. Longer
C. Equal
D. None of these
|
| 7 | With age, least distance of distinct vision: |
A. Increases
B. Decreases
C. Is not affected
D. None is correct
|
| 8 | In the formula R = N x m for diffraction grating, N denotes: |
A. No. of lines/cm
B. No. of lines/meter
C. Total number of lines
D. None of above
|
| 9 | Which one the following gives three regions of electromagnetic spectrum in order of increasing wavelength? |
A. Gamma rays, micro waves, visible light
B. Radio waves, ultraviolet waves, X-rays
C. Ultraviolet rays, infrared rays, micro waves
D. Visible light, gamma rays, radio waves
|
| 10 | A convex lens acts as diverging lens when the object is placed: |
A. Beyond 2F
B. At 2F
C. With focal length
D. Between F and 2F
|
Test Questions