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 refractive index of a medium is defined as a ratio

Question # 2

In case of interference fringes:

Energy is destroyed at dark A
Energy is created at bright fringes B
Energy is transferred from dark to bright ringes C
None of these D

Question # 3

Point out angle/angle at which the sin θ and tan θ have the same value

2^o and 8^o A
4^o and 6^o B
2^o and 4^o C
8^o and 10^o D

Question # 4

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 # 5

A plane wavefront is that which has source

Nearest A
Distant B
Near C
None of these D

Question # 6

Zero order image formed by the grating when the angle the along the direction of normal to grating is

Zero A
90^o B
180^o C
None of these D

Question # 7

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 # 8

Snell's Law is defined as

n1 sin θ₂ = n₂ sin θ A
n sin θ₁ = n₁ sin θ₂ B
n₁ sin θ₁ = n₂ sin θ₂ C
None of these D

Question # 9

Who confirm the wave theory of light ?

Newton A
Michelson B
Newton C
Thomos Young D

Question # 10

In an astronomical telescope the eye piece has the focal length f_e if

Short A
Long B
Extremely long C
None of these D

Question # 11

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 # 12

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 # 13

Which of the following theories of light are explained by the Young's double slit experiment?

wave theory of light A
particle nature of light B
dual nature of light C
corpuscular nature of light D

Question # 14

Ordinary light has components of vibration in

One direction A
Different direction B
All directions C
None of these D

Question # 15

The light source in the transmitter can be

semiconductor laser A
LED B
both of them C
either of them D

Question # 16

A compound microscopes consists of objective of

Very short focal length A
Large focal length B
Very large focal length C
None of these D

Question # 17

The minimum distance between an object and its image in a convex lens is

2 f A
2.5 f B
3 f C
3.5 f D

Question # 18

In Newton s rings the central spot appears dark due to

Phase change A
Destructive interference B
Small eye piece of optical device C
Both a and b D

Question # 19

Geometrical optics cannot give following characteristics for a microscope

Image position A
Image size B
Resolution of image C
Any of the above D

Question # 20

Plane polarized light can be produced by:

Simple reflection A
Refraction B
Selective absorption C
All of these D

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9 Questions
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Sr.#	Question	Answer
1	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
2	Inspite of different dispersion, all the wavelengths arrive at the other end of the fibre at the same time. With a step-index fibre overall time difference may be about	A. 40 ns B. 30 ns C. 32 ns D. 33 ns
3	Who attempted to measure the speed of light	A. Gallileo B. Michelson C. Newton D. None of these
4	An object is placed at a distance 18 cm from a convex lens. The image is formed at a distance of 9 cm the focal length of the lens is	A. 6 cm B. 9 cm C. 10 cm D. 18 cm
5	The diffraction of light occurs, due to interference, of	A. Obstructed portion B. Unobstructed portion C. Both obstructed and unobstructed light D. None of these
6	Which of the following is conserved when light waves interfere?	A. Intensity B. Energy C. Amplitude D. Momentum
7	The unpolarized light is	A. An ordinary incandescent bulb B. Sun C. Moon D. All of these
8	For interference to occur the two light waves should be:	A. Of two different frequencies B. Coming from opposite directions C. Of high intensity D. Monochromatic
9	Turn table is the plateform over which we place	A. Diffraction grating B. Prism C. Glass slab D. a and b
10	The image of an object 5 mm length is only 1 cm high. The magnification of the lens is	A. 1 B. 0.2 C. 2 D. 0.1

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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 refractive index of a medium is defined as a ratio

In case of interference fringes:

Point out angle/angle at which the sin θ and tan θ have the same value

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

A plane wavefront is that which has source

Zero order image formed by the grating when the angle the along the direction of normal to grating is

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

Snell's Law is defined as

Who confirm the wave theory of light ?

In an astronomical telescope the eye piece has the focal length fe if

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

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

Which of the following theories of light are explained by the Young's double slit experiment?

Ordinary light has components of vibration in

The light source in the transmitter can be

A compound microscopes consists of objective of

The minimum distance between an object and its image in a convex lens is

In Newton s rings the central spot appears dark due to

Geometrical optics cannot give following characteristics for a microscope

Plane polarized light can be produced by:

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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In an astronomical telescope the eye piece has the focal length f_e if