ECAT Pre General Science Chapter 9 online mcq test with answers for Physics chapter 9 (Physical Optics)

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

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

Total Questions15
Time Allowed15

Start Test Download PDF

ECAT Pre General Science Physics Chapter 9 Physical Optics

00:00

Question # 1

The image of the tip of a needle is never sharp because of

Polarization of light A
Interference of light B
Diffraction of light C
Reflection of light D

Question # 2

Stars twinkle due to

The fact that they do not emit light continuously A
The refractive index of earth's atmosphere fluctuates B
The Star's atmosphere absorbs its light intermittently C
None of these D

Question # 3

The contrast in the fringes in an interference pattern depends upon

Fringe width A
Relative difference intensities of the two sources B
Distance between the slits C
Wavelength D

Question # 4

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

Real A
Virtual B
Diminished C
Erect D

Question # 5

If the object and its image are located at a distance of 5 cm from the focus of a convex lens, the focus length of the lens will be:

5 cm A
10 cm B
20 cm C
25 cm D

Question # 6

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

Spherical A
Cylindrical B
Plane C
None of these D

Question # 7

The cause of mirage observed in deserts in bright sunlight is due to

Refraction of light A
Reflection of light B
Scattering of light C
Total internal reflection of light D

Question # 8

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:

5 cm A
20 cm B
10 cm C
15 cm D

Question # 9

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

No. of lines/cm A
No. of lines/meter B
Total number of lines C
None of above D

Question # 10

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:

15 cm A
10 cm B
20 cm C
5 cm D

Question # 11

Light has:

Wave nature A
Particle nature B
Dual nature C
None of these D

Question # 12

Huygen's theory cannot explain

Diffraction A
Interference B
Polarization C
Photoelectric effect D

Question # 13

The superposition of the two waves of same frequency and amplitude travelling in the same direction gives to an effect called

Diffraction A
Interference B
Polarization C
Dispersion D

Question # 14

Speed of light in vacuum depends upon:

Frequency A
Wavelength B
Amplitude C
None of these D

Question # 15

A ray passing through optical center of a lens, after refraction:

Passes through focus A
Go deviated B
Retraces its path C
Both B and C D

Submit

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

Set 1

15 Questions
Start
Set 2

15 Questions
Start
Set 3

15 Questions
Start
Set 4

15 Questions
Start
Set 5

15 Questions
Start
Set 6

2 Questions
Start

Latest Educational News Stories

Pakistan's Largest Database of Colleges and Universities

BS Programs

University Past Papers

University Results

Exam Results 2024

Study Abroad Programs and Opportunities for Pakistani Students

ECAT Pre General Science Physics Chapter 9 MCQ Test With Answer

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

ECAT Pre General Science Physics Chapter 9 Physical Optics

The image of the tip of a needle is never sharp because of

Stars twinkle due to

The contrast in the fringes in an interference pattern depends upon

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

If the object and its image are located at a distance of 5 cm from the focus of a convex lens, the focus length of the lens will be:

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

The cause of mirage observed in deserts in bright sunlight is due to

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:

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

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:

Light has:

Huygen's theory cannot explain

The superposition of the two waves of same frequency and amplitude travelling in the same direction gives to an effect called

Speed of light in vacuum depends upon:

A ray passing through optical center of a lens, after refraction:

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

Set 1

Set 2

Set 3

Set 4

Set 5

Set 6

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

Test Questions

Is this page helpful?