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 are said to be coherent if they have:

Question # 2

Who attempted to measure the speed of light

Question # 3

How is the interference pattern in Young's double slit experiment affected if the sodium light is replaced by red light of the same intensity

Question # 4

A diffraction grating contains 5000 lines per centimeter, its grating element will be

Question # 5

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

Question # 6

In YDS experiment, if the distance between the slits and also the distance between slits and screen is doubled, the fringe width:

Question # 7

In YDS experiment, if the distance between the slits and also the distance between slits and screen is doubled, the fringe width

Question # 8

A lens of 2 cm focal length is to be used as a magnifying glass. Its magnification is

Question # 9

The minimum distance between a source and the screen for which a real image is possible with a convex lens is

Question # 10

Phase change of 180° is equivalent to a path difference of

Question # 11

Let a ray of light enters from air into two media of different refractive indices. The speed of light will be ______ to refractive index

Question # 12

If 5000 lines per cm are ruled on different on a diffraction grating then the slit spacing will be

Question # 13

In newton's rings apparatus, we also use:

Question # 14

If the moveable mirror in Michelsion's interferometer moves a distanceλ/2, the path difference changes by

Question # 15

According to the relation for constructive destructive interference, the point of contact has zero thickness of air so it should have

Question # 16

Who proposed wave theory of light

Question # 17

For the monochromatic beam of X-rays, the crystal planes in a lattice act like a

Question # 18

Light traveling through vacuum enters water which characteristic of light does not charge

Question # 19

Two wave of intensities I an 4I superpose then the maximum and minimum intensities are

Question # 20

Maximum detail of object can be seen from a microscope wen light used is of

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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 The resolving power of telescope depends on
A. Focal length of eye lens
B. Focal length of objective lens
C. Length of the telescope
D. Diameter of he objective lens
2 Multimode step index fibre has diameter as
A. 40 μm
B. 50 μm
C. 60 μm
D. None of these
3 If N is the number of rulings on the grating, then the resolving power in the mth order diffraction equals to
A. R = N × m
B. R = N/m
C. R = m/N
D. R = N × m2
4 In order to observe interference , the interfering beams must be
A. monochromatic
B. coherent
C. either of them
D. both of them
5 Michelesion's interferometer is an instrument usually used to measure
A. intensity of light
B. speed of light
C. wavelength of light
D. dispersion of light
6 Certain light of wavelength 600 nm is used to view an object under the microscope. If the aperture of its objective is 1.22 cm, then the limiting angle of resolution will be
A. 6 x 10-5rad
B. 7 x 10-5rad
C. 8 x 10-5rad
D. None of these
7 For a system to transmit thousands of telephones conversations, several television programs and numerous data signals, it need the following number so threads of optical fibre
A. 100 to 200
B. 1000 to 10000
C. 100 to 1000
D. 1 or 2
8 If the plane polarized light is incident on the second sheet of Polaroid, no light is emitted when their axes are
A. Parallel to each other
B. Perpendicular to each other
C. In between two positions
D. None of these
9 The plane of polarization is rotated many degrees when a thickness of such crystal is
A. One millimeter
B. Less than one millimeter
C. A few millimeter
D. None of these
10 In an interference fringes pattern the fringes are
A. Equally spaced
B. Wider near the centre and narrower away from it
C. Narrower near the centre and wider away from it
D. None of these

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