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

The speed of light in a medium of refractive index 1.5 is

Question # 2

An oil surface floating on water surface exhibits beautiful colour patter, which is due to 

Question # 3

Photo phone was invented by

Question # 4

In digital modulation, the LED or laser flashed on and off at a

Question # 5

Magnification of a convex lens is

Question # 6

In young's double slit experiment the separation between the slit is halved and distance between the slit and screen is doubled.The fringe width is

Question # 7

To observe diffraction phenomenon the size of a obstacle

Question # 8

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

Question # 9

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

Question # 10

For a point source of light the wave front produced are

Question # 11

Soap bubble looks colored due to

Question # 12

A monochromatic source of light gives light of

Question # 13

In Michelsion's interferometer the path difference is varied by moving

Question # 14

When crest of one wave coincides with the trough of the other wave, it give rise to

Question # 15

The fringe spacing in case of blue light

Question # 16

Due to dispersion effects, white light source is useful for

Question # 17

The regular array of atoms in a crystal forms a natural diffraction grating of spacing typically

Question # 18

Wavelength of light, on the average, is given by:

Question # 19

The refractive index of a medium is defined as a ratio

Question # 20

The ratio of fringes with for bright and dark fringes is

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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 In Michelsion's interferometer, if 'm' number of fringes are passed in front of a reference point when the moveable mirror is moved a distance L, then
A. L = mλ
B. L = 2mλ
C. L = mλ/2
D. L = 3/2 mλ
2 The speed of secondary wavelets as mentioned in Huygen's principle is______the speed of propagation of the wave itself:
A. Equal to
B. Greater than
C. Smaller than
D. None of these
3 Which one light source can travel faster through optical fibre is
A. Infra red
B. Visible
C. Ultra violet
D. All of these
4 At certain speed, the time taken by light in moving from M to m and back to M is equal to the time taken by
A. Face 4  to 1
B. Fact 6 to 1
C. Face 3 to 1
D. Face 2 to 1
5 The wave length of x-rays is of the order of
A. 10-17 m
B. 10-4 cm
C. 10-9 m
D. 10-10 m
6 The minimum number of lenses used in compound microscope is
A. 1
B. 2
C. 3
D. 4
7 In Micheal sons interfrometes apparatus the numbers of mirrors and glas plates are used respectively ara
A. 2,2
B. 2,3
C. 3,2
D. 3,3
8 The phenomenon is found to be prominent when size of the opening (aperture) is
A. Grater than wavelength of light
B. Smaller than wavelength of light
C. Equal of light used
D. None of these
9 Snell's Law is defined as
A. n1 sin θ2 = n2 sin θ
B. n sin θ1 = n1 sin θ2
C. n1 sin θ1 = n2 sin θ2
D. None of these
10 For the sustained interference of light the necessary condition is that the two sources should
A. Have constant phase difference
B. Be narrow
C. Be close to each other
D. Of same amplitude

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