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 organic substances which shows optical rotation when they are in solution

Question # 2

The transmitter in optical fiber system contains a device called

Question # 3

Two light sources obtained from single source are called

Question # 4

The principle of Michelson's interferometers is

Question # 5

If plane polarized light is incident on the second sheet of Polaroid, the light emitted is full light when their axes are

Question # 6

Wavelength of X-rays falling at a glancing angle of 30° on a crystal with atomic spacing 2 x 10-10m for first order diffraction is

Question # 7

An optical fiber carries data in the form

Question # 8

When a plane polarized light is passed through certain crystals they

Question # 9

Such type of fibre in which center core is of high refractive index and the layer over the central core is low refractive index is called

Question # 10

In case of a point source, the shape of the wavefront is

Question # 11

Mirage is a phenomenon due to

Question # 12

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

Question # 13

A glass plate on which a large number of very fine equidistant parallel lines are drawn is called

Question # 14

When θ = 0 in relation d sinθ = λ, the path difference between the rays coming out from the slits of the grating will be zero. So the image in this directions is

Question # 15

The apparent size of an object depends on the angle subtended but it at the eye. As the angle increases the size of the object

Question # 16

Two lenses of power +12 and -2 diopters are placed in contact the power of combination is

Question # 17

When refractive index of core is 1.50 and of 1.48 of cadding then find the angle of entry for an optical fibre is

Question # 18

A line which represents the direction of travel of a wave is known as

Question # 19

In case of reflection of ray within a denser medium, angle of incidnet is ______ -angle of reflection

Question # 20

Laws of reflection and refraction can also be explained by:

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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 the Young's double slit experiment the separation between the slits is halved and the distance between the slits and the screen is doubled the fringe width is
A. Halved
B. Unchanged
C. Doubled
D. Quadrupled
2 A monochromatic source of light gives light of
A. one colour
B. two colours
C. four colours
D. seven colours
3 A new type of optical fibre in which central core has high refractive index and its density gradually decreases towards its periphery is called
A. Step index fibre
B. Multimode step index fibre
C. Multimode graded index
D. None of these
4 Ray optics is valid,when characteristic dimensions are
A. Of the same order as the wavelength of light
B. Much smaller than the wavelength of length
C. Of the order of one millimeter
D. Much larger than the wavelength or light
5 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
A. The fringes will vanish
B. The fringes will become brighter
C. The fringes will increase
D. The fringes will decrease
6 The refracting edge of the prism must be parallel to the axis of rotation of the telescope, so that the turn table is leveled using
A. Screws of the spectrometer
B. Leveling screws
C. Turn table screw
D. None of these
7 Rainbow is formed due to combination of
A. Dispersion and total internal reflection
B. Reflection and refraction
C. Dispersion and focusing
D. Refection and scattering
8 Bending of light around sharp edges is known as
A. Interference
B. Diffraction
C. Reflection
D. Dispersion
9 Which of the following types of optical fibre has a core which rages in diameter from 50 to 1000μm?
A. single mode step fibre
B. multi-mode step index fibre
C. multi-mode graded index fibre
D. none of them
10 Inverse square law for luminance is valid for
A. Search light
B. Isotropic point source
C. Cylindrical source
D. All types of sources

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