MDCAT Physics Chapter 7 MCQ Test With Answer for (Light )

Many students feel anxious about how to prepare for the exam during the MDCAT preparation effectively. Solving MCQs is considered one of the best ways to analyze your preparation level before the commencement of the test. The students preparing for the MDCAT are informed that they can get the MCQs of chapter 7 of physics from this platform.

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

Two sources of light are said to be coherent when the waves produced by them have

Question # 2

If the vibrations of the light wave are confined to one plane only, then this light is called

Question # 3

The re conversion of light signals into electrical signals takes place due to

Question # 4

To get three images of a single object,one should have two plane mirrors at an angle of

Question # 5

The contrast in the fringes in an interference pattern depends upon

Question # 6

The length of a telescope is 36 cm.The focal lengths of its lenses can be

Question # 7

According to Young s experiment the distance between two adjacent bright fringes of blue light is _____ than for oranges light

Question # 8

Which of the following types of optical fibre has a very thin core of about 5μm diameter and has a relatively large cladding?

Question # 9

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

Question # 10

Spherical aberration can be reduced by using

Question # 11

Michelson's interferometer is an instrument used to measure the distance with

Question # 12

Which one light source can travel faster through optical fibre is

Question # 13

In young's slit experiment on interference the ratio of the intensities of a bright band and a dark band is 6 : 1 the ratio of the amplitudes o the interfering waves is

Question # 14

A double convex lens acts as a diverging lens when the object is

Question # 15

When a ray of light enters a denser medium from a rarer medium,its:

Question # 16

Inverse square law for luminace is valid for

Question # 17

For interference to occur the two light waves should be:

Question # 18

The distance between the concentric wavefronts is

Question # 19

Ordinary light has components of vibration in

Question # 20

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

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The answers are also available here to facilitate the students' preparation. With continuous practice, the candidates will be able to get a good score on the entry test. So after preparing for the particular chapter, solve the MCQs and learn about your preparation. Spend maximum time to improve your weak areas and then ace the test with a good score. The students can also solve the other physics chapters' MCQs for better preparation.

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MCAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Light appears to travels in straight lines since
A. It is not absorbed by the atmosphere
B. It is reflected by the atmosphere
C. Its wavelength is very small
D. Its velocity is very large
2 Which light travels faster in optical fibres?
A. visible light
B. ultraviolet
C. infra-red
D. any one of them
3 Huygen's principle is used to study the
A. formation of wavefronts
B. propagation of wavefronts
C. nature of light
D. speed of light
4 With tremendous information carrying capacity is called
A. Data entry
B. Band width
C. Word processing
D. None of these
5 The resolving power of a grating spectrometer is
6 The light signal in an optical fibre requires that the light should
A. be partially confined within the fibre
B. be totally confined within the fibre
C. not be confined within the table
D. none of them
7 Colours seen on oily water surface by the incident white light is due to
A. Diffraction
B. Interference
C. Refraction
D. Reflection
8 A fly is sitting on the objective of a telescope pointed towards the moon.What effect is expected on the photography of the moon taken through the telescope?
A. The entire field of view blocked
B. There is an image of the fly on the photography
C. There is no effect at all
D. There is a reduction in the intensity of the image
9 If the wavelength of light used in Michelsion's interferometer is 400 nm and the moveable mirror only moved throughλ/4, then the length moved will be
A. 10 nm
B. 10-2mm
C. 1 nm
D. 10-4mm
10 If the power of a lens is 4 diopters then is focal length is
A. 20 cm
B. 25 cm
C. 50 cm
D. 400 cm

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