MDCAT Physics Chapter 7 online mcq test with answers for chapter 7 (Current Electricity)

MCQ's Test For MDCAT Physics Chapter 7 Light Online Test

Try The MCQ's Test For MDCAT Physics Chapter 7 Light Online Test

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MDCAT Physics Chapter 7 Light Online Test

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Question # 1

A diffraction grating contains 5000 lines per centimeter, its grating element will be

1 x 10^-4nm A
1 x 10^-14m B
1 x 10^-14cm C
1 x 10^-4cm D

Question # 2

Two sources of waves are called coherent if

Both have the same amplitude of vibrations A
Both produce waves of the same wavelength B
Both produce waves of the same wavelength having a constant phase difference C
Both produce waves having the same velocity D

Question # 3

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

1 A
0.2 B
2 C
0.1 D

Question # 4

The components of a fibre optic communication system is/are

At transmitter A
An optical fibre B
Receiver C
All of these D

Question # 5

Refractive index of material depends upon

Nature of material A
Wave length B
Temperature C
All of these D

Question # 6

The function of colimator is

To converge the incoming rays A
To make the parallel rays from source B
In which the source of light is kept C
None of these D

Question # 7

Which of the following is an optical fibre in which the density of central core decreases towards its periphery?

multi-mode step index fibre A
multi-mode graded index fibre B
both of them C
none of them D

Question # 8

A diffraction grating has 500 liens per mm. its slit spacing or grating element will

500 mm A
5 x 10^-3mm B
2 x 10^-5mm C
2 x 10^-3mm D

Question # 9

If Young s double slit experiment is immersed in water then the fringes with

Decreases A
Remains unchanged B
Becomes infinite C
Increases D

Question # 10

In multi-mode step index optical fibre, that layer is called cladding which has

higher refractive index A
lower refractive index B
both of them C
none of them D

Question # 11

Which device converts the light signals which these amplified and decoded

Photo cell A
Photo diode B
Photo transistor C
None of these D

Question # 12

In which situation does diffraction occur?

a wave bounces back from a surface A
a wave meets another wave to produce a new wave B
a wave passes from one medium into another C
a wave passes through an aperture D

Question # 13

Due to dispersion effects, white light source is useful for

Long distance A
Short distance B
Very long distances C
None of these D

Question # 14

According to Huygen's principle, every point of a wavefront may be considered as a source of

primary wavelets A
secondary wavelets B
either of them C
both of them D

Question # 15

The phenomenon of diffraction also contains the phenomenon of

Polarization A
Interference B
Dispersion C
None of these D

Question # 16

The distance between different interference fringes are:

Variable A
Same B
Different C
None of these D

Question # 17

How many major components of fibre optic communication system are

Question # 18

In digital modulation, the LED or laser flashed on and off at a

Fast rate A
Very fast rate B
Extremely fast rate C
None of these D

Question # 19

For constructive interference the path difference is

mλ A
(m-1)λ B
m²λ C
1/2mλ D

Question # 20

The total internal reflection takes place for glass-air boundary is then the angle is

Equal to 41.8^o A
Greater than 41.8^o B
Less than 41.8^o C
None of these D

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Prepare Complete Set Wise MDCAT Physics Chapter 7 Light Online Test MCQs Online With Answers

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Sr.#	Question	Answer
1	The distance between different interference fringes are:	A. Variable B. Same C. Different D. None of these
2	The different parts of spectrometer	A. Collimator B. Turn table C. Telescope D. All of these
3	The idea of Michelsion's interferometer is based on the	A. reflection of light B. interference of light C. refraction of light D. all of them
4	Angle between ray of light and the corresponding wave front is	A. 10° B. 60° C. 90° D. 120°
5	Wavelength of a laser beam can be used as a standard of	A. Time B. Angle C. Length D. Temperature
6	The wavefront formed at very large distance from the source is:	A. Cylindrical B. Spherical C. Elliptical D. Plane
7	A double convex lens acts as a diverging lens when the object is	A. Between f and 2f B. At the foucs C. Inside the focus D. All of these
8	According to Young s experiment if frequency of light used is halved then fringe width becomes	A. 2/3 B. Double C. Remains constant D. Fringe
9	According to Huygen,every point on a wavefront may be regarded as a.........of secondary wavelets.	A. Base B. Source C. Producer D. Origin
10	At points where the crest (or trough) of one wave coincides with the crest (or trough) of the other wave, the wave produces	A. destructive interference B. constructive interference C. diffraction D. dispersion

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MDCAT Physics Chapter 7 MCQ Test With Answer for (Light )

MCQ's Test For MDCAT Physics Chapter 7 Light Online Test

MDCAT Physics Chapter 7 Light Online Test

A diffraction grating contains 5000 lines per centimeter, its grating element will be

Two sources of waves are called coherent if

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

The components of a fibre optic communication system is/are

Refractive index of material depends upon

The function of colimator is

Which of the following is an optical fibre in which the density of central core decreases towards its periphery?

A diffraction grating has 500 liens per mm. its slit spacing or grating element will

If Young s double slit experiment is immersed in water then the fringes with

In multi-mode step index optical fibre, that layer is called cladding which has

Which device converts the light signals which these amplified and decoded

In which situation does diffraction occur?

Due to dispersion effects, white light source is useful for

According to Huygen's principle, every point of a wavefront may be considered as a source of

The phenomenon of diffraction also contains the phenomenon of

The distance between different interference fringes are:

How many major components of fibre optic communication system are

In digital modulation, the LED or laser flashed on and off at a

For constructive interference the path difference is

The total internal reflection takes place for glass-air boundary is then the angle is

Prepare Complete Set Wise MDCAT Physics Chapter 7 Light Online Test MCQs Online With Answers

Set 1

Set 2

Set 3

Set 4

Set 5

Set 6

Set 7

Set 8

Set 9

Set 10

Set 11

Set 12

Set 13

Set 14

Set 15

Set 16

Set 17

Set 18

Set 19

Set 20

Set 21

Set 22

Set 23

Set 24

Set 25

Set 26

Set 27

Set 28

Set 29

Set 30

Set 31

Set 32

Set 33

Set 34

Set 35

Set 36

Set 37

Set 38

Set 39

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