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

If a point source of light is placed at the focus of a convex lens the rays coming out of the lens will constitute

Plane wave fronts A
Cylindrical wave fronts B
Spherical wave fronts C
All of above D

Question # 2

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

Question # 3

When the light from two lamps falls on a screen, no interference pattern can be obtained. Why is this?

the light from the lamps is white A
the lamps emit light of different amlitudes B
the light from the lamps is not coherent C
the lamps are not point sources D

Question # 4

The contrast in the fringes in any interference pattern depends on

Frings width A
Intensity ratio of the sources B
Distance between the slits C
Wavelength D

Question # 5

The setting of Newton's rings is

A Plano convex lens and the plane glass plate A
A Plano convex lens and simple glass sheet B
A Plano convex lens (long focal length) and the plane of glass plate C
None of these D

Question # 6

Alexander graham bell transmits a voice message via a

Beam of light A
Telescope B
Compound microscope C
Mirror D

Question # 7

Resolving power of a telescope depends on:

The magnification of eyepiece A
The focal length of objective lens B
Diameter of objective lens C
Refractive index of objective lens D

Question # 8

Which of the following is not an advantages of using optical fibres over copper cables?

signal attenuation A
number of signals carried per wire B
cost of installation C
none of the above D

Question # 9

Plane microwaves are incident on a long slit having a width of 5 cm.The wavelength of the microwaves if the first minima is formed at 30° is

25 cm A
5 cm B
2.5 cm C
5 mm D

Question # 10

The polarized can be achieved by using process like

Coherent sources A
Diffraction B
Selective absorption C
None of these D

Question # 11

Newton's rings are formed as a result of

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

Question # 12

According to Huygen's principle, the new position of the wavefront after a time can be found by constructing a surface that touches all the

primary wavelets A
secondary wavelets B
either of them C
none of them D

Question # 13

Wavelength of X-rays falling at glace angle 30° on crystal with atomic spacing 2 x 10^-9m for the first order diffraction is

4 x 10^-6m A
2 x 10^-10m B
0.2 x 10^-10m C
20 x 10^-10m D

Question # 14

Fire optics has ability to transmit

Thousand telephone conversation A
Several television programs B
Numerous data signals between stations C
All of these D

Question # 15

Who proposed that light energy form a luminous source travels in space by means of wave motion?

Newton A
Maxwell B
Einstein C
Huygen D

Question # 16

In Young's double slit experiment fringe width (or fringe spacing) depends

inversely on wavelength A
directly on wavelength B
directly on square of wavelength C
inversely on square of wavelength D

Question # 17

Propagation of light in an optical fibre requires

Total internal reflection A
Continuous refraction B
Both C
None of these D

Question # 18

Most widely used optical fibres are those which propagate light by

total interval reflection A
continuous refraction B
both of them C
none of them D

Question # 19

Single mode step index fibre has a very thin core of about diameter

5.5 μm A
9.5 μm B
5.0 μm C
All of these D

Question # 20

Which of the following is not an application of polarization

To reduce glare of light A
To check concentration sugar in solution B
Curtain less windows C
All 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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Set 39

9 Questions
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Sr.#	Question	Answer
1	When a movable mirror moves λ/4 distance and the light used is 400 nm, then the distance measured highly precise is	A. 100 nm B. 10^-4 nm C. 10^-6 nm D. 10^-5 mm
2	A microscope has an objective lens of 10 mm focal length and an eye piece of 25.0 mm focal length what is the distance between the lenses	A. ≈ 200 mm B. ≈ 210 mm C. ≈ 213 mm D. ≈ 233 mm
3	For glass-air boundary the critical angle θ_c is	A. 30^o B. 41.8^o C. 42.0^o D. 44.0^o
4	Who proposed that light energy form a luminous source travels in space by means of wave motion?	A. Newton B. Maxwell C. Einstein D. Huygen
5	Which of the following properties show light is transverse wave in nature?	A. Interference B. Reflection C. Diffraction D. Polarization
6	The range of the diameter of core in multimode graded index fibre is	A. 50 to 100 μm B. 50 to 1000 μm C. 50 to 1000 μm D. None of these
7	In Young s experiment the distance between two adjacent fringes for blue light is than that for green light	A. Lesser B. Greater C. Equal D. Lesser if distance between source and screen is large
8	Newton's rings are:	A. Concetric circles B. spherical C. None of these D. Rectangular
9	In newton's rings apparatus, we also use:	A. Spectroscope B. Telescope C. Microscope D. Any of these
10	Cladding means a layer of ______ refractive index over the central core of ______ refractive index	A. Lower, lower B. Higher, lower C. Lower, higher D. None of these

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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

If a point source of light is placed at the focus of a convex lens the rays coming out of the lens will constitute

To increase the magnification of a telescope

When the light from two lamps falls on a screen, no interference pattern can be obtained. Why is this?

The contrast in the fringes in any interference pattern depends on

The setting of Newton's rings is

Alexander graham bell transmits a voice message via a

Resolving power of a telescope depends on:

Which of the following is not an advantages of using optical fibres over copper cables?

Plane microwaves are incident on a long slit having a width of 5 cm.The wavelength of the microwaves if the first minima is formed at 30° is

The polarized can be achieved by using process like

Newton's rings are formed as a result of

According to Huygen's principle, the new position of the wavefront after a time can be found by constructing a surface that touches all the

Wavelength of X-rays falling at glace angle 30° on crystal with atomic spacing 2 x 10-9m for the first order diffraction is

Fire optics has ability to transmit

Who proposed that light energy form a luminous source travels in space by means of wave motion?

In Young's double slit experiment fringe width (or fringe spacing) depends

Propagation of light in an optical fibre requires

Most widely used optical fibres are those which propagate light by

Single mode step index fibre has a very thin core of about diameter

Which of the following is not an application of polarization

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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Wavelength of X-rays falling at glace angle 30° on crystal with atomic spacing 2 x 10^-9m for the first order diffraction is