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

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 # 2

The absence of light in the optical fibres represents the number

0 A
1 B
2 C
-1 D

Question # 3

Optical fibres function on the principle of

reflection A
refraction B
total internal reflection C
total internal refraction D

Question # 4

The speed of the secondary wavelets as mentioned in Huygen's principle is ________ the speed of propagation of the wave itself

Equal to A
Greater than B
Smaller than C
None of these D

Question # 5

Given that grating element = 0.2 x 10^-3cm in case of a diffraction grating. Then number of lines per centimeter will be

500000 A
5000 B
50 C
5 D

Question # 6

In Newton's rings the thickness of air film at the point of contact is

maximum A
minimum B
equal to wavelength C
zero D

Question # 7

To observe interference of light the condition which must be met with is that the sources must be:

Monochromatic A
Phase coherent B
Both of above C
None of above D

Question # 8

In Newton's rings the point of contact of the lens and the glass plate, the air film is

Minimum A
Maximum B
Zero C
None of these D

Question # 9

For a point source of light the wave front produced are

Circular A
Spherical B
Cylinrical C
None D

Question # 10

The diffraction is found to be prominent when the wavelength of light is

small as compared with the size of obstacle A
large as compared with the size of obstacle B
equal as compared with the size of obstacle C
Very small as compared with the size of the obstacle D

Question # 11

Which effect provides direct experiment evidence that light is a transverse rather than a longitudinal,wave motion?

Light can be diffracted A
Two coherent light waves can be made to be interfere B
The intensity of light from a point source falls off inversely as the square of the distance from the source C
Light can be polarized D

Question # 12

In Michelsion's interferometer, if 'm' number of fringes are passed in front of a reference point when the moveable mirror is moved a distance L, then

L = mλ A
L = 2mλ B
L = mλ/2 C
L = 3/2 mλ D

Question # 13

Two layers optical fibre in which central layer is called core which has refractive index

High A
Low B
Very low C
None of these D

Question # 14

Which of the following atoms cannot be detected by X-ray crystallography?

carbon A
nitrogen B
hydrogen C
neon D

Question # 15

A compound microscope is consists of

One convex lens A
Two convex lenses B
Two concave lenses C
None of these D

Question # 16

A converging lens in used to from an image on a screen when the upper half of the lens is covered by an opaque screen

Half the image will disappear A
No change either in size or in intersity B
Intensity of image will increase C
Intensity of the image will decrease D

Question # 17

If the thickness of the film and angle of incidence are such that two reflected waves cancel each other the film will look

Dark A
Bright B
May be partly bright C
None of these D

Question # 18

In YDS experiment, if the distance between the slits and also the distance between slits and screen is doubled, the fringe width

Becomes doubled A
Becomes 4 times B
Is halved C
Remains the same D

Question # 19

The resolving power of telescope depends on

Focal length of eye lens A
Focal length of objective lens B
Length of the telescope C
Diameter of he objective lens D

Question # 20

The points on a Huygen's wave front which sends out secondary wavelets are also

Source A
Source of secondary wavelets B
Coherent sources of light C
None of these D

Submit

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

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Set 33

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Set 35

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Set 36

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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	A compound microscope is consists of	A. One convex lens B. Two convex lenses C. Two concave lenses D. None of these
2	The phenomenon of blending of around edges of an obstacle is called:	A. Interfarance B. Defraction C. Polorisation D. None of above
3	The concentration in solution can be determined by the property known as	A. Solubility B. Insolubility C. Optical activity D. None of these
4	The speed of light in vacuum or in air is	A. 3 x 10¹⁰ m ! s B. 3 x 10⁹ m ! s C. 3 x 10⁸ m ! s D. 3 x 10⁷ m ! s
5	An optical instrument used to see very far off objects is called	A. Telescope B. Camera lens C. Microscope D. Spectrometer
6	The ability of an instrument of reveal the minor details of an object under examination is called	A. Resolution B. Magnification C. Resolving power D. Dispersion
7	When light travels from one medium to another which are separated by a sharp boundary the characteristic which does not change is	A. Velocity B. Wavelength C. Frequency D. Amplitude
8	The polarized can be achieved by using process like	A. Coherent sources B. Diffraction C. Selective absorption D. None of these
9	How many phone calls can be carried by single mode step index fibre	A. 25000 B. 96000 C. 14000 D. 21000
10	Which of the following is conserved when light waves interfere	A. Intensity B. Energy C. Amplitude D. Momentum

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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

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

The absence of light in the optical fibres represents the number

Optical fibres function on the principle of

The speed of the secondary wavelets as mentioned in Huygen's principle is ________ the speed of propagation of the wave itself

Given that grating element = 0.2 x 10-3cm in case of a diffraction grating. Then number of lines per centimeter will be

In Newton's rings the thickness of air film at the point of contact is

To observe interference of light the condition which must be met with is that the sources must be:

In Newton's rings the point of contact of the lens and the glass plate, the air film is

For a point source of light the wave front produced are

The diffraction is found to be prominent when the wavelength of light is

Which effect provides direct experiment evidence that light is a transverse rather than a longitudinal,wave motion?

In Michelsion's interferometer, if 'm' number of fringes are passed in front of a reference point when the moveable mirror is moved a distance L, then

Two layers optical fibre in which central layer is called core which has refractive index

Which of the following atoms cannot be detected by X-ray crystallography?

A compound microscope is consists of

A converging lens in used to from an image on a screen when the upper half of the lens is covered by an opaque screen

If the thickness of the film and angle of incidence are such that two reflected waves cancel each other the film will look

In YDS experiment, if the distance between the slits and also the distance between slits and screen is doubled, the fringe width

The resolving power of telescope depends on

The points on a Huygen's wave front which sends out secondary wavelets are also

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

Given that grating element = 0.2 x 10^-3cm in case of a diffraction grating. Then number of lines per centimeter will be