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

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

Question # 2

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 # 3

In the formula R = N x m for diffraction grating, N denotes:

Question # 4

The ratio of the diameter of two convex lenses is _____-the ratio of their focal lengths:

Question # 5

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

Question # 6

The magnifier forms a virtual image of the object at:

Question # 7

Speed of light in vacuum depends upon:

Question # 8

Conventionally, all the distance p, q, f are measured from _____ of the lens:

Question # 9

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

Question # 10

The appearance of the colour in the soap (oil) film results from:

Question # 11

The terms phase difference and path difference are:

Question # 12

Angle between the ray of light and the corresponding wavefront is:

Question # 13

In case of destructive interference of two waves, the amplitude of the resultant wave will be ____ either of the waves:

Question # 14

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

Question # 15

In order to get interference using two light rays

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 If the object is situated at focus of a convex lens, then its image is formed at:
A. F
B. 2F
C. Infinity
D. None of these
2 Which one of the following can act approximately as a source of monochromatic light;
A. Neon lamp
B. Fluorescent tube
C. Sodium lamp
D. None of these
3 A line which represents the direction of travel of a wave is known as:
A. Spherical Wavefront
B. Locus
C. Ray
D. Either B or C
4 Conventionally, all the distance p, q, f are measured from _____ of the lens:
A. Focus
B. Optical center
C. Edges
D. None of these
5 In an interference pattern of Young's double slit(YDS) experiment:
A. Bright fringesare wider than dark fringes
B. Dark fringes are wider than bright fringes
C. Both dark and bright fringes are of equal width
D.

Central fringes are wider than the outer fringes
6 The ratio of the size of the image to that of object is called:
A. Focal length
B. Aperture
C. Linear magnification
D. Principal axis
7 The cause of mirage observed in deserts in bright sunlight is due to
A. Refraction of light
B. Reflection of light
C. Scattering of light
D. Total internal reflection of light
8 The image of an object 5 mm length is only 1 cm high. The magnification produced by lens is:
A. 1
B. 0.2
C. 2
D. 0.1
9 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
10 Huygen's principles states that:
A. Light has dual nature
B. Either of these
C. None of these
D. Light travels in straigth line

Test Questions

Is this page helpful?

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!