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

If focal length of objective is increased

Question # 2

We can divide the optical fibres on the basis of the mode by which they propagate light in

Question # 3

With the help of interferometer, we can find the

Question # 4

In a diffraction fringes pattern the fringes are

Question # 5

Which of the following radiation will be focused farthest from a convex lens

Question # 6

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

Question # 7

Multimode step index fibre has diameter as

Question # 8

Conditions for interference are that the two sources should be coherent and

Question # 9

Analyzer is use to

Question # 10

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

Question # 11

How many types of the optical fibres are

Question # 12

The resolving power of human eye is

Question # 13

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

Question # 14

In multi-mode step index optical fibre, that layer is called cladding which has

Question # 15

A single converging lens placed close to the eye to see magnified image is called

Question # 16

The absence of light in the optical fibres represents the number

Question # 17

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 # 18

All of the following statements are correct except

Question # 19

The cause of mirage observed in deserts in bright sunlight is due to:

Question # 20

Magnification of a convex lens 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 A completely transparent material will be invisible in vacuum when the refractive index n is
A. Unity
B. More than unity
C. Less than unity
D. Equal to 1.33
2 A diffraction pattern is obtained using a beam of red light What will happen if the red light is replaced by blue light?
A. No change
B. Diffraction bands become narrower and crowded together
C. Bands become broader and farther apart
D. Bands disappear
3 How many fringes will pass a reference point if the moveable mirror of a Michelson s interferometer is moved 0.06 mm The wavelength of light used is 5.89 x10-3 mm
A. 200
B. 300
C. 20.4
D. 2.3
4 According to the Huygen's principle, the secondary wavelets propagate in the forward direction with a speed equal to
A. speed of wave motion
B. speed of medium
C. speed of electrons
D. speed of protons
5 The Plano-convex lens used in the Newton's rings are of focal length
A. Small
B. Long
C. Very large
D. None of these
6 The twinkling of stars is due to
A. The fact that stars do not emit light continususly
B. The refractive index of the earth's atmosphere fluctuate
C. Intermittent absorption of star light by its own atmosphere
D. None of these
7 A point source in a homogeneous medium gives rise to:
A. A plane wavefront
B. A spherical wavefront
C. A cylindrical wavefront
D. An elliptical wavefront
8 In case of point source of light, shape of wavefront is:
A. Spherical
B. Cylindrical
C. Plane
D. None of these
9 The angle with the horizontal at which an underwater swimmer will see the setting sun is
A. 91°
B. 32°
C. 49°
D. 69°
10 In compound microscope image formed is
A. Real erect and diminished
B. Virtual inverted magnitude
C. Real inverted and magnified
D. Virtual inverted and magnified

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