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 the red light is replaced by blue light illuminating the object in a microscope the resolving power of the microscope

Decreases A
Increases B
Gets halved C
Remains unchanged D

Question # 2

In Young s double slit experiment the separation between the slits in halved and the distance between the slits and the screen is doubled the fringe with will

Be doubled A
Be quadrupled B
Remain the same C
Be halved D

Question # 3

Diffraction of X-ray by crystals show that

The intensity of X-rays A
X-rays have very short wavelength B
X-rays are electromagnetic waves C
A-rays are just like visible light D

Question # 4

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 # 5

To wavelength of light by his experiment , Newton utilized:

Wavelength of light A
Intensity of light B
amplitude wave C
None of above 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

A convex lens is dipped in a liquid whose refractive index is equal to the material of the lens. Then its focal length will become

Infinite A
Zero B
Extremely small C
Extremely large D

Question # 8

Propagation of light in an optical fibre requires that the light should

be partially confined within the fibre A
be totally confined within the fibre B
not be confined within the table C
none of them D

Question # 9

If d = 0.25 cm Y = 0.059 cm L = 100 cm m = 2 then λ is equal to

567 nm A
569 nm B
590 nm C
596 nm D

Question # 10

The light source used in multimode step index fibre is

A monochromatic source A
Red light B
White light C
None of these D

Question # 11

In the study of interference and diffraction, we consider

plane waves A
plane wavefronts B
both of them C
none of them D

Question # 12

We can observe only when the grating spacing is

of the order of the wavelength used A
greater than the wavelength used B
less than the wavelength used C
any one of them D

Question # 13

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 # 14

The interference fringes are of

equal width A
variable width B
zero width C
non-uniform width D

Question # 15

Speed of light in vacuum depends upon:

Frequency A
Wavelength B
Amplitude C
None of above D

Question # 16

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 # 17

If the focal length of objective is 10 mm find its magnification

18 A
19 B
20 C
21 D

Question # 18

When seen in green light the saffron and green portions of our National Flag will appear to be

Black A
Black and green respectively B
Green C
Green and yellow respectively D

Question # 19

Due to Plano convex lens and the plane glass plate the thickness of air film changes from the center to outward

Increasing gradually A
Decreasing gradually B
It is constant at the centre C
None of these D

Question # 20

The magnifying power of a compound microscope can be increased if we use objective lens of

Large focal length A
Small focal length B
Same focal length 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 38

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Set 39

9 Questions
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Sr.#	Question	Answer
1	Light has:	A. Wave nature B. Particle nature C. Dual nature D. None of them
2	Who gave the idea of light as wave ?	A. Newton B. Huygen C. Thomos Young D. Bragg
3	The wavelength of light is 6000°A, the number of waves continued in 0.01 m distance will be	A. 1.6 x 10⁴ B. 3 x 10³ C. 2 x 10⁶ D. 4 x 10⁸
4	Multi-mode step index fibre index fibre is used to send	A. white light B. green light C. a strong monochromatic light D. yellow light
5	If the focal of a convex lens is 5 cm then to get real and inverted image of the same size as that of object, the object should be placed at	A. 5 cm B. 10 cm C. 15 cm D. 20 cm
6	Michelson's interferometer is an instrument that is capable of measuring distance with	A. low precision B. high precision C. extremely high precision D. extremely low precision
7	Electromagnetic waves from a source were found to be significantly diffracted when passing through gaps of the order of 10 m. What type of waves are they likely to be?	A. gamma waves B. light waves C. microwaves D. radiowaves
8	Newton's rings are:	A. Concetric circles B. spherical C. None of these D. Rectangular
9	According to Huygen's principle:	A. Light travel in straight line B. Light is a transvers wave C. Light has dual nature D. All point on the primary wavefront are the sources of secondary wavelets
10	A typical diffraction grating has lines per centimeter is about	A. 500 to 6000 B. 400 to 5000 C. 450 to 5500 D. 425 to 5670

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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 the red light is replaced by blue light illuminating the object in a microscope the resolving power of the microscope

In Young s double slit experiment the separation between the slits in halved and the distance between the slits and the screen is doubled the fringe with will

Diffraction of X-ray by crystals show that

Identify the incorrect statement

To wavelength of light by his experiment , Newton utilized:

All of the following statements are correct except

A convex lens is dipped in a liquid whose refractive index is equal to the material of the lens. Then its focal length will become

Propagation of light in an optical fibre requires that the light should

If d = 0.25 cm Y = 0.059 cm L = 100 cm m = 2 then λ is equal to

The light source used in multimode step index fibre is

In the study of interference and diffraction, we consider

We can observe only when the grating spacing is

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

The interference fringes are of

Speed of light in vacuum depends upon:

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

If the focal length of objective is 10 mm find its magnification

When seen in green light the saffron and green portions of our National Flag will appear to be

Due to Plano convex lens and the plane glass plate the thickness of air film changes from the center to outward

The magnifying power of a compound microscope can be increased if we use objective lens 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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