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

Which of the following is the most common method to obtain polarized light?

selective absorption A
reflection from different surfaces B
refraction through crystals C
scattering by small particles D

Question # 2

Fraunhofer spectrum is a

Line absorption spectrum A
Band absorption spectrum B
Line emission spectrum C
Band emission spectrum D

Question # 3

Huygen's wave front which sends out secondary wavelets with a speed equal to

Speed of propagation of the wave A
Speed of propagation greater than wave B
Speed of propagation less than the wave C
None of these D

Question # 4

When an image formed by the objective lies at the focus of both the objective and the eye-piece, the telescope is said to be in

Final adjustment A
Normal adjustment B
Initial adjustment C
None of these D

Question # 5

In YDS experiment, the condition for constructive interference of two coherent waves is that the path difference should be

Integral multiple ofλ/2 A
Integral multiple ofλ B
Even integral multiple ofλ/2 C
Both A and C D

Question # 6

All of the following statements are correct except

The total focal length of an astronomical telescope is the sum of the focal lengths of its two lenses A
The image formed by the astronomical telescope is always erect because the effect of the combination of the two lenses is divergent B
The magnification of an astronomical telescope can be increased by decreasing the focal length of the eyepiece. C

Question # 7

The spacing between the parallel lines are served as

slits A
source of light B
opaque lines C
fringes D

Question # 8

Two monochromatic radiations X and Y are incident normally on a diffraction grating.The second order intensity maximum for X coincides with the third order intensity maximum for Y what is the ratio wavelength of X/wavelength of Y?

1/2 A
2/3 B
3/2 C
2/1 D

Question # 9

A _____ lens is used in the apparatus to get newton's ring:

Plano-concave A
Plano-convex B
Convexo concave C
Double covex D

Question # 10

How the fringe spacing varies as the separation of the slits increases

Increases A
Decreases B
Increases very little C
None of these D

Question # 11

The appearance of colours in the shape (or oil) film results from:

Dispersion A
Interference B
Reflection C
Refraction D

Question # 12

For the normal setting of a telescope

Only the object is at infinity A
Only the final image is at infinity B
Both the object and the final image is at infinity C
Neither the object nor the final image has to be at infinity D

Question # 13

The distance between the concentric wavefronts is

half wavelength A
one wavelength B
one and a half wavelength C
none of them D

Question # 14

In case of reflection of ray within a denser medium, angle of incidnet is ______ -angle of reflection

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

Question # 15

Least distance of distinct vision

Decrease with increasing age A
Increases with increasing age B
Does not vary with age C
May increase or decrease with age D

Question # 16

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

11.2^o A
14.2^o B
15.4^o C
13.6^o D

Question # 17

Identify the incorrect statement

The distance between the objective and eye-piece is 16.02 cm A
The angular magnification of the planet is 800 B
The image of the planet is inverted C
The objective is larger than the eye-piece D

Question # 18

The angle of incidence at which angle of refraction becomes 90⁰ is called

Incident angle A
Angle of refraction B
Critical angle C
Phase angle D

Question # 19

The minimum distance between a source and the screen for which a real image is possible with a convex lens is

Its focal length A
Twice the focal length B
Four times the focal length C
Square of the focal length D

Question # 20

The phenomenon of diffraction also contains the phenomenon of

Polarization A
Interference B
Dispersion 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 14

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Set 16

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Set 17

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Set 18

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Set 19

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Set 20

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Set 21

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Set 22

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Set 23

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Set 25

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Set 27

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Set 28

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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	In which mode, the refractive index steps down form 1.52 to 1.48 at the boundary with the cladding?	A. Single mode step index B. multimode step index C. multimode graded index D. all of them
2	How many fringes will pass a reference point if the moveable mirror of a Michelson s interferometer is moved 0.06 mm The wavelength of light used is 5.89 x10^-3 mm	A. 200 B. 300 C. 20.4 D. 2.3
3	The splitting of white light into several colors on passing through a glass prism is due to	A. Refraction B. Reflection C. Interference D. Diffraction
4	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
5	Diffraction of X-ray by crystals show that	A. The intensity of X-rays B. X-rays have very short wavelength C. X-rays are electromagnetic waves D. A-rays are just like visible light
6	Whenever high magnification is desired	A. A telescope is used B. A compound microscope is used C. A microscope is used D. None of these
7	The cause of power loss in optic fibre is	A. Absorption B. Scattering C. Dispersion D. All
8	A completely transparent material will be invisible in vacuum when the refractive index n is	A. Unity B. More than unity C. Less than unity D. Equal to 1.33
9	The setting of Newton's rings is	A. A Plano convex lens and the plane glass plate B. A Plano convex lens and simple glass sheet C. A Plano convex lens (long focal length) and the plane of glass plate D. None of these
10	Phenomenon of interference and diffraction support the:	A. Quantum nature of light B. Tranverse nature of light C. Wave nature of light D. Complex nature of light

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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

Which of the following is the most common method to obtain polarized light?

Fraunhofer spectrum is a

Huygen's wave front which sends out secondary wavelets with a speed equal to

When an image formed by the objective lies at the focus of both the objective and the eye-piece, the telescope is said to be in

In YDS experiment, the condition for constructive interference of two coherent waves is that the path difference should be

All of the following statements are correct except

The spacing between the parallel lines are served as

Two monochromatic radiations X and Y are incident normally on a diffraction grating.The second order intensity maximum for X coincides with the third order intensity maximum for Y what is the ratio wavelength of X/wavelength of Y?

A _____ lens is used in the apparatus to get newton's ring:

How the fringe spacing varies as the separation of the slits increases

The appearance of colours in the shape (or oil) film results from:

For the normal setting of a telescope

The distance between the concentric wavefronts is

In case of reflection of ray within a denser medium, angle of incidnet is ______ -angle of reflection

Least distance of distinct vision

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

Identify the incorrect statement

The angle of incidence at which angle of refraction becomes 900 is called

The minimum distance between a source and the screen for which a real image is possible with a convex lens is

The phenomenon of diffraction also contains the phenomenon of

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 angle of incidence at which angle of refraction becomes 90⁰ is called