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

The speed of light in a medium depends upon

Its wavelength A
Its frequency B
Refractive index C
All of these D

Question # 2

The wave nature of light was proposed by:

Newton A
Thomas Young B
Huygen C
None of these D

Question # 3

Bending of light around sharp edges is known as

Interference A
Diffraction B
Reflection C
Dispersion D

Question # 4

Newton's rings are:

Concetric circles A
spherical B
None of these C
Rectangular D

Question # 5

The wavefront formed at very large distance from the source is:

Cylindrical A
Spherical B
Elliptical C
Plane D

Question # 6

A driver in a lake wants to signal his distress to a person sitting on the edge of the lake flashing his water proof torch He should direct the beam

Vertically up wards A
Horizontally B
At angle to the vertical which is slightly less than the critical angle C
At an angle to the vertical which is slightly more than critical angle D

Question # 7

Photo phone was invented by

Edison A
Graham Bell B
Bardeen C
None of these D

Question # 8

A convex ens acts as diverging lens when the object is placed

Between F and 2F A
At 2F B
Within the focal length C
Beyond 2F D

Question # 9

The speed of light in other material is always

Greater than c A
Less than c B
Equal to c C
None of these D

Question # 10

If the angle of refraction is 90^o, for which the angle of incidence is called

Incident angle A
Critical angle B
Angle of emergence C
None of these D

Question # 11

For glass-air boundary the critical angle θ_c is

30^o A
41.8^o B
42.0^o C
44.0^o D

Question # 12

The twinkling of stars is due to

The fact that stars do not emit light continususly A
The refractive index of the earth's atmosphere fluctuate B
Intermittent absorption of star light by its own atmosphere C
None of these D

Question # 13

A normal to the waves front showing direction of propagating of wave is called

Photon A
Particle B
Ray C
Line D

Question # 14

Choose the correct statement

Rays are normal to wave front A
Rays may be normal to wave front B
Rays are not normal to wave front C
There is no relationship between rays and wave fronts D

Question # 15

When sunlight falls on a soap bubble (film), it appears coloured because of

interference of light A
dispersion of light B
polarization of light C
diffraction of light D

Question # 16

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 # 17

The function of compensator plate in interferometer is to

Interfere properly A
To equalize the distance of M₁ and M₂ B
Reflecting light properly C
None of these D

Question # 18

Basic principle of an optical fibre is

Reflection A
Scattering B
Polarization C
Total internal reflection D

Question # 19

A circular scale is attached and graduated in

One degree A
2 degrees B
Half degree C
None of these D

Question # 20

To increase the magnification of a telescope

The objective lens should be of large focal length and eyepiece should be of short focal length A
The objective and eyepiece both should be of large focal lengths B
Both the objective and eyepiece should be of smaller lengths C
The objective should be small focal length and eyepiece should be of large focal length D

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

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Set 2

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Set 3

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Set 4

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Set 5

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Set 6

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Set 7

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Set 10

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Set 11

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Set 14

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Set 30

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Set 37

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Set 38

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Set 39

9 Questions
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Sr.#	Question	Answer
1	For glass-air boundary, the value of the critical angle is	A. 42° B. 45° C. 30° D. 60°
2	When refractive index of core is 1.50 and of 1.48 of cadding then find the angle of entry for an optical fibre is	A. 11.2^o B. 14.2^o C. 15.4^o D. 13.6^o
3	Which of the following is an optical fibre in which the density of central core decreases towards its periphery?	A. multi-mode step index fibre B. multi-mode graded index fibre C. both of them D. none of them
4	Which of the following phenomenon cannot take place if we consider light as longitudinal wave?	A. diffraction B. interference C. polarization D. reflection
5	When 'θ' is small then	A. tan θ ≈ sin θ B. cos θ ≈ sin θ C. sin θ ≈ tan θ D. None of these
6	The light signal in an optical fibre requires that the light should	A. be partially confined within the fibre B. be totally confined within the fibre C. not be confined within the table D. none of them
7	In Bragg's Equation 2d sin θ = nλ, where 'n' is	A. Order of spectrum B. Number of reflections C. Order of reflection D. None of these
8	The path difference and phase difference are related to each other as	A. Phase difference = (2π) x path difference B. Phase difference = (2π/λ) x path difference C. Phase difference = (λ/2) x path difference D. Phase difference = (2λ/π) x path difference
9	In Newton's rings the thickness of air film at the point of contact is	A. maximum B. minimum C. equal to wavelength D. zero
10	In the thin film, the path difference between the two reflecting waves depends upon	A. thickness of film B. nature of film C. angle of incidence D. all of them

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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

The speed of light in a medium depends upon

The wave nature of light was proposed by:

Bending of light around sharp edges is known as

Newton's rings are:

The wavefront formed at very large distance from the source is:

A driver in a lake wants to signal his distress to a person sitting on the edge of the lake flashing his water proof torch He should direct the beam

Photo phone was invented by

A convex ens acts as diverging lens when the object is placed

The speed of light in other material is always

If the angle of refraction is 90o, for which the angle of incidence is called

For glass-air boundary the critical angle θc is

The twinkling of stars is due to

A normal to the waves front showing direction of propagating of wave is called

Choose the correct statement

When sunlight falls on a soap bubble (film), it appears coloured because of

The function of colimator is

The function of compensator plate in interferometer is to

Basic principle of an optical fibre is

A circular scale is attached and graduated in

To increase the magnification of a telescope

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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If the angle of refraction is 90^o, for which the angle of incidence is called

For glass-air boundary the critical angle θ_c is