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

A driver in a lake wants to signal his distress to a person sitting on the edge of the lake flashing his water proof torch He should direct the beam

Vertically up wards A
Horizontally B
At angle to the vertical which is slightly less than the critical angle C
At an angle to the vertical which is slightly more than critical angle D

Question # 2

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 # 3

In Bragg's Equation 2d sin θ = nλ, where 'n' is

Order of spectrum A
Number of reflections B
Order of reflection C
None of these D

Question # 4

If focal length of objective is increased

Magnifying power of compound microscope decreased A
Magnifying power of astronomical telescope increases B
The diameter of the objective lens C
None of these D

Question # 5

Which one of the following can act approximately as a source of monochromatic light:

Neon lamp A
Fluorescent tube B
Sodium lamp C
None of these D

Question # 6

An optical instrument used to see very far off objects is called

Telescope A
Camera lens B
Microscope C
Spectrometer D

Question # 7

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

Question # 8

A convex ens acts as diverging lens when the object is placed

Between F and 2F A
At 2F B
Within the focal length C
Beyond 2F D

Question # 9

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 # 10

Light appears to travels in straight lines since

It is not absorbed by the atmosphere A
It is reflected by the atmosphere B
Its wavelength is very small C
Its velocity is very large D

Question # 11

There will be no change in _______ of light entering glass

Velocity A
Frequency B
Direction C
Wavelength D

Question # 12

The digital modulation is expressed in

Bytes A
Codes B
Bits C
None of these D

Question # 13

In the thin film, the path difference between the two reflecting waves depends upon

thickness of film A
nature of film B
angle of incidence C
all of them D

Question # 14

In normal adjustment, the length of the telescope is

f_e + f_o A
f_o - f_e B
f_e - f_o C
None of these D

Question # 15

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 # 16

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 # 17

When interference of light takes place

Energy is created in the region of maximum intensity A
Energy is destroyed in region of maximum intensity B
Conservation of energy hold goods and energy is redistributed C
Conservation of energy does not hold good D

Question # 18

X-rays interact with

solid crystal A
atoms in the crystal B
nuclei of atoms in the crystal C
electrons of atoms in the crystal D

Question # 19

The function of compensator plate in interferometer is to

Interfere properly A
To equalize the distance of M₁ and M₂ B
Reflecting light properly C
None of these D

Question # 20

If we know the refractive index of glass, speed v of light in the glass can be found by

v = c n A
v = c/n B
v = n/c 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 5

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Set 7

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Set 38

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Set 39

9 Questions
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Sr.#	Question	Answer
1	The most common method to obtain plane polarized light by using dichoric substance is:	A. Selective absorption B. Reflection from different surfaces C. Refraction from different surfaces D. Scattering
2	Light has:	A. Wave nature B. Particle nature C. Dual nature D. None of them
3	Analyzer is use to	A. Polarize the light B. Un-polarize the light C. Check whether the light is polarized or un polarized D. Rotate the plane of polarized light
4	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
5	A diffraction grating of length 2cm has 4000 lines The grating element is	A. 0.5 x 10^-2 cm B. 5 x 10⁴ C. 5 x 10^-4 D. 0.5 x 10^-4 cm
6	The resolving power of human eye is	A. 1° B. 2° C. 3° D. 6°
7	The light signal in an optical fibre is totally confined due to the	A. total internal reflection B. continuous refraction C. both of them D. either of them
8	Light waves are	A. Transverse waves B. Longitudinal waves C. Compressional wave D. None of these
9	The frequency of light ray is 6 x 10¹⁴ Hz. The frequency when it propagates in a medium of refractive index 1.5 will be	A. 6 x 10¹⁴ Hz B. 4 x 10¹⁴ Hz C. 9 x 10¹⁴ Hz D. 1.67 x 10¹⁴ Hz
10	We can divide the optical fibres on the basis of the mode by which they propagate light in	A. two types B. three types C. four types D. many types

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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

A driver in a lake wants to signal his distress to a person sitting on the edge of the lake flashing his water proof torch He should direct the beam

Geometrical optics cannot give following characteristics for a microscope

In Bragg's Equation 2d sin θ = nλ, where 'n' is

If focal length of objective is increased

Which one of the following can act approximately as a source of monochromatic light:

An optical instrument used to see very far off objects is called

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

A convex ens acts as diverging lens when the object is placed

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

Light appears to travels in straight lines since

There will be no change in _______ of light entering glass

The digital modulation is expressed in

In the thin film, the path difference between the two reflecting waves depends upon

In normal adjustment, the length of the telescope is

Diffraction of X-ray by crystals show that

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

When interference of light takes place

X-rays interact with

The function of compensator plate in interferometer is to

If we know the refractive index of glass, speed v of light in the glass can be found 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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Given that grating element = 0.2 x 10^-3cm in case of a diffraction grating. Then number of lines per centimeter will be