ECAT Pre Computer Science Chapter 9 MCQ Test With Answer

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

Start Test Download PDF

ECAT Physics Chapter 9 Physical Optics

00:00
Question # 1

The focal length of convex lens having magnifying power of 5.55 is:

Question # 2

The distance from eye to near point is taken as:

Question # 3

To observe interference of light, the condition, which must be met with is that the sources must be:

Question # 4

When the object lies between F and 2F, the image formed by is formed at:

Question # 5

If the focal length of the convex lens is 5 cm, then to get the real and inverted image of the same size as that of object, the object should be placed at:

Question # 6

Frequency of red color as compared to that of violet color is:

Question # 7

To sources are said to be coherent if they have:

Question # 8

If yellow light emitted by sodium lamp in Young's double slit experiment is replaced by blue light of the same intensity

Question # 9

A grating with high resolving power can distinguish _______ difference in wavelengths :

Question # 10

When a source of light isat very large distance,the shape of wavefront is:

Question # 11

Certain light of wavelength 600 nm is used to view an object under the microscope. If the aperture of its objective is 1.22 cm, then the limiting angle of resolution will be:

Question # 12

A grating with high resolving power can distinguish _______ difference in wavelengths :

Question # 13

Wave length of that color as compared to that of violet color is:

Question # 14

The image of an object 5 mm length is only 1 cm high. The magnification produced by lens is:

Question # 15

If the object is placed at 12 cm distance from a convex lens of focal length 6 cm, then we get an image of ____ as that of object:

Submit

Prepare Complete Set Wise ECAT Physics Chapter 9 Physical Optics MCQs Online With Answers


Topic Test

00:00
Submit

Top Scorers Of ECAT Physics Chapter 9 Physical Optics MCQ`s Test

  • H
    Heer 21 - Jan - 2024 00 Min 29 Sec 60/60
  • H
    Hamza Mukhtair 19 - Jul - 2022 00 Min 49 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
  • 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 The contrast in the fringes in an interference pattern depends upon
A. Fringe width
B. Relative difference intensities of the two sources
C. Distance between the slits
D. Wavelength
2 The appearance of the colour in the soap (oil) film results from:
A. Dispersion
B. Interference
C. Reflection
D. Refraction
3 The magnifier forms a virtual image of the object at:
A. None of these
B. Least distance of distinct vision
C. Much farther than the least distance
D. Both A and B are correct
4 With age, least distance of distinct vision:
A. Increases
B. Decreases
C. Is not affected
D. None is correct
5 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
6 Light waves are:
A. Transverse wave
B. Longitudinal wave
C. Compressional wave
D. None of them
7 To observe interference of light, the condition, which must be met with is that the sources must be:
A. Monochromatic
B. Phase coherent
C. Both of above
D. None of above
8 In case of point, source of light shape of wavefront is:
A. Spherical
B. Cylindrical
C. Plane
D. None of these
9 When a source of light isat very large distance,the shape of wavefront is:
A. Spherical
B. Cylindrical
C. Plane
D. None of these
10 To sources are said to be coherent if they have:
A. Same amplitude
B. Same wavelength
C. Definite phase relation with each other
D. None of them

Test Questions

Is this page helpful?

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!