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 vacuum is 3 x 10⁸ ms^-1.Its speed in a medium of refractive index 1.5 will be

6.5 x 10⁸ A
2 x 10⁸ ms^-1 B
4.5 x 10⁸ cm C
5.5 x 10⁸ D

Question # 2

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

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

Question # 3

The study of atomic structure of crystals by X-rays was initiated by W.H.. Bragg and W.L. Bragg in

1920 A
1926 B
1910 C
1914 D

Question # 4

The fine rulings on a compact disc as a diffraction grating but each line is wide like

0.01 μm A
0.5 μm B
0.05 μm C
0.6 μm D

Question # 5

The disadvantage of the step-index fibre can be reduced by

graded index fibre A
non-graded index fibre B
both of these C
none of these D

Question # 6

All possible process/processes to get plane polarized light

Reflection from different surfaces A
Refraction through crystals B
Scattering by small particles C
All of these D

Question # 7

The relation d sinθ = nλ, where 'n' is the

Number of bright fringes A
Number of dark fringes B
Order of the spectrum C
None of these D

Question # 8

To get higher magnification we must use

Simple microscope A
A convex lens B
A compound microscope C
All of these D

Question # 9

How are X-rays diffracted by crystals in X-rays crystallography?

they bounce off the nucleus A
they are diffracted whey they pass from between them acting as a slit B
they are diffracted by the electron clouds in the atoms C
they hit the side the nucleus and change direction and thus are diffracted D

Question # 10

A glass plate on which a large number of very fine equidistant parallel lines are drawn is called

convex lens A
thin film B
diffraction grating C
interferometer D

Question # 11

At points where the crest (or trough) of one wave coincides with the crest (or trough) of the other wave, the wave produces

destructive interference A
constructive interference B
diffraction C
dispersion D

Question # 12

In order to observe interference , the interfering beams must be

monochromatic A
coherent B
either of them C
both of them D

Question # 13

Who attempted to measure the speed of light

Gallileo A
Michelson B
Newton C
None of these D

Question # 14

A completely transparent material will be invisible in vacuum when the refractive index n is

Unity A
More than unity B
Less than unity C
Equal to 1.33 D

Question # 15

In an interference pattern of Ypung's double Slit (YDS) experiment:

Bright fringes are wider than dark fringes A
Dark fringes are wider than bright fringes B
Both dark and bright fringes are of equal width C
Central fringes are wider than the outer fringes D

Question # 16

Fringe spacing in YDS experiment will be maximum if we use

Red light A
Green light B
Violet light C
Blue light D

Question # 17

For interference to occur,the interfering beams of light must be

Of different frequencies A
Coherent B
White light C
Added D

Question # 18

In light waves, the components of electric and magnetic fields are

parallel to each other A
anti-parallel to each B
right angle to each other C
none of them D

Question # 19

The most common method to obtain plane polarized light by using dichoric substance is:

Selective absorption A
Reflection from different surfaces B
Refraction from different surfaces C
Scattering D

Question # 20

Cladding means a layer of refractive index over the central core of refractive index

Lower, lower A
Higher, lower B
Lower, higher 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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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 7

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Set 8

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Set 9

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Set 10

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Set 11

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Set 12

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Set 13

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Set 14

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Set 15

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Set 16

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Set 17

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Set 18

20 Questions
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Set 19

20 Questions
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Set 20

20 Questions
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Set 21

20 Questions
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Set 22

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Set 23

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Set 24

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Set 25

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Set 26

20 Questions
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Set 27

20 Questions
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Set 28

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Set 29

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Set 30

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Set 31

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Set 32

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Set 33

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Set 34

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Set 35

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Set 36

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Set 37

20 Questions
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Set 38

20 Questions
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Set 39

9 Questions
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Sr.#	Question	Answer
1	One cannot see through fog because	A. Fog absorbs light B. The refractive index of fog is infinity C. Light suffers total reflection at the droplet in a fog D. Light is scattered by the droplets in fog
2	The image formed by an eyepiece of compound microscope is	A. Real and diminished B. Real and enlarged C. Virtual and enlarged D. Virtual and diminished
3	In order to observe interference , the interfering beams must be	A. monochromatic B. coherent C. either of them D. both of them
4	In Young's double slit experiment for the interference of light, the central region of the fringe system is	A. Bright B. Dark C. Bright and dark D. None of these
5	A prism splits a beam of white light into its seven constituent colors.This is so because	A. Phase of different colors is diferent B. Amplitude of different colors is different C. Energy of different colors is different D. Velocity of different colors if different
6	According to Young s experiment the distance between two adjacent bright fringes of blue light is _____ than for oranges light	A. Less B. Maximum C. Equal D. May be less may be greater depending upon slit spacing
7	In the phenomenon of interference, the bright and dark fringes are of	A. Different width B. Equal width C. Dark fringes are thicker than bright D. Nona of these
8	Michelson's interferometer is an instrument used to measure the distance with	A. Precision B. High precision C. Extremely high precision D. None of these
9	Repeaters are the devices which regenerate the signals and are placed at about	A. 20 km B. 30 km C. 40 km D. 50 km
10	Source of light used in the fibre optic communication	A. Led B. Laser C. Photo diode D. Both a and b

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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 vacuum is 3 x 108 ms-1.Its speed in a medium of refractive index 1.5 will be

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

The study of atomic structure of crystals by X-rays was initiated by W.H.. Bragg and W.L. Bragg in

The fine rulings on a compact disc as a diffraction grating but each line is wide like

The disadvantage of the step-index fibre can be reduced by

All possible process/processes to get plane polarized light

The relation d sinθ = nλ, where 'n' is the

To get higher magnification we must use

How are X-rays diffracted by crystals in X-rays crystallography?

A glass plate on which a large number of very fine equidistant parallel lines are drawn is called

At points where the crest (or trough) of one wave coincides with the crest (or trough) of the other wave, the wave produces

In order to observe interference , the interfering beams must be

Who attempted to measure the speed of light

A completely transparent material will be invisible in vacuum when the refractive index n is

In an interference pattern of Ypung's double Slit (YDS) experiment:

Fringe spacing in YDS experiment will be maximum if we use

For interference to occur,the interfering beams of light must be

In light waves, the components of electric and magnetic fields are

The most common method to obtain plane polarized light by using dichoric substance is:

Cladding means a layer of ______ refractive index over the central core of ______ refractive index

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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The speed of light in vacuum is 3 x 10⁸ ms^-1.Its speed in a medium of refractive index 1.5 will be

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

Cladding means a layer of refractive index over the central core of refractive index