ECAT Pre Engineering Physics Chapter 9 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 9 Physical Optics

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 9 Physical Optics

  • Total Questions15

  • Time Allowed20

Start Test Download PDF

Physics ECAT Pre Engineering Chapter 9 Physical Optics

00:00
Question # 1

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:

Question # 2

The locus of all points in a medium having same phase of vibration is called

Question # 3

How is the image formed by a convex lens affected if the upper half of the lens is covered with a paper:

Question # 4

In YDS experiment, fringe spacing means the distance between two consecutive ____fringes.

Question # 5

Which one of the following phenomenon cannot be explained on the bases of Huygen's theory

Question # 6

The speed of the secondary wavelets as mentioned in Huygen's principle is _____ the speed of propagation of the wave itself.

Question # 7

For the virtual image, option _______ is not correct:

Question # 8

In an interference pattern of Young's double slit(YDS) experiment:

Question # 9

Light waves are:

Question # 10

Resolving power in mth order diffraction for grating is given by:

Question # 11

The magnifier forms a virtual image of the object at:

Question # 12

Stars twinkle due to

Question # 13

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

Question # 14

A line which represents the direction of travel of a wave is known as:

Question # 15

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

Submit

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


Topic Test

00:00
Submit

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

  • F
    Farzand Shah Farzand Shah 17 - Apr - 2024 01 Min 00 Sec 60/60
  • D
    Deuspeu 25 - Sep - 2024 01 Min 40 Sec 60/60
  • U
    Umarkhan35429@gmail.com Khan 04 - May - 2024 05 Min 00 Sec 60/60
  • H
    Haq Nawaz 16 - May - 2024 02 Min 31 Sec 55/60
  • M
    M Saifullah 20 - Jul - 2024 04 Min 06 Sec 55/60
  • D
    Danish Mehmood Awan 08 - Mar - 2024 04 Min 25 Sec 55/60
  • M
    moeez farooq 06 - Mar - 2024 43 Min 27 Sec 55/60
  • M
    M Umer Arain 10 - Nov - 2024 00 Min 15 Sec 50/60
  • A
    Adan Zahra 14 - Mar - 2024 01 Min 22 Sec 50/60
  • H
    Huzaifa Asim 25 - May - 2024 01 Min 32 Sec 50/60
  • A
    Arian Ahmed 06 - Mar - 2024 00 Min 03 Sec 45/60
  • A
    afzal ibrahim 06 - Mar - 2024 01 Min 55 Sec 45/60
  • A
    Ayesha Sohail 03 - Jun - 2024 03 Min 04 Sec 45/60
  • A
    Alishba Dabeer 02 - Jun - 2024 03 Min 25 Sec 45/60
  • T
    Tamshi Sohail 21 - Apr - 2024 06 Min 48 Sec 45/60

ECAT Physics Chapter 9 Important MCQ's

Sr.# Question Answer
1 The terms phase difference and path difference are:
A. Same
B. Different
C. Equal
D. None of these
2 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
3 When the same object is viewed at a shorter distance, the image on the retina of the eye is _____ the so the object appears:
A. Greater, smaller
B. Smaller, smaller
C. Smaller, larger
D. Greater, larger
4 The locus of all the points in the same phase of vibration is called:
A. Wave packet
B. Wave front
C. Wave number
D. None of them
5 The wave nature of light was proposed by:
A. Newton
B. Thomas Young
C. Huygen
D. None of these
6 How is the image formed by a convex lens affected if the upper half of the lens is covered with a paper:
A. The upper half of the image is cut off
B. The brightness of the image is reduced
C. The brightness of the image is increased
D. No effect at all
7 A prism splits a beam of white light into seven component colors. This is so because
A. Phase of different colors is different
B. Amplitude of different colors is different
C. Wavelength of different colors is different
D. Velocity of different colors is different
8 Electromagnetic waves transport:
A. Energy only
B. Momentum only
C. Both A and B are correct
D. None of is correct
9 Huygen's theory cannot explain
A. Diffraction
B. Interference
C. Polarization
D. Photoelectric effect
10 Monochromatic light means waves of:
A. Same frequency
B. Same colour
C. Same wavelength
D. All of them

Test Questions

Is this page helpful?

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!