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

Try The 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

As the object is brought from a far off point to he focus, the magnification goes on

Question # 2

According to Young s experiment if frequency of light used is halved then fringe width becomes

Question # 3

The dichronic substances are used in the process getting plane polarized light

Question # 4

Plane microwaves are incident on a long slit having a width of 5 cm.The wavelength of the microwaves if the first minima is formed at 30° is

Question # 5

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

Question # 6

A compound microscope is consists of an eye piece  of focal length

Question # 7

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?

Question # 8

Michelson,s interferometer can be used to measure

Question # 9

The light which has components in all directions is called

Question # 10

When two lights waves travelling in the same direction are in phase at any point, they producing

Question # 11

The scattering of X-rays from atoms in a crystalline lattice gives rise to

Question # 12

There will be no change in _______ of light entering glass

Question # 13

Angle subtended by any side of the eight-sided mirror at the center is

Question # 14

With a graded index fibre, the overall time difference between all the wavelengths arrived at the other end may be about

Question # 15

The unit of power of a lens is

Question # 16

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

Question # 17

Monochromatic light directly means waves of

Question # 18

A compound microscope is consists of objective of

Question # 19

Optic fibers are related with

Question # 20

A _____ lens is used in the apparatus to get newton's ring:

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MCAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 A spectrum which contains all wavelengths without any break is called
A. Emission spectrum
B. Line spectrum
C. Continuous emission spectrum
D. All of them
2 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
3 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
4 Multimode step index fibre has a core of relatively larger diameter such is
A. 125 μm
B. 175 μm
C. 50 μm
D. 100 μm
5 Inverse square law for luminance is valid for
A. Search light
B. Isotropic point source
C. Cylindrical source
D. All types of sources
6 To observe diffraction phenomenon the size of a obstacle
A. Should be much larger than the wavelength
B. Should be of the same order as the wavelength
C. Have no relation of wavelength
D. Should be exactly λ/2
7 Power of a lens is equal to
A. Focal length in meters
B. Reciprocal of focal length expressed in meters
C. Double the focal length
D. Half the focal length
8 Using monochromatic light, interference fringes are produced on a screen placed a distance D from a pair of slits of separation a.
The separation of the fringes is X.
a is now halved and D is increased by a factor of 4.
What is the new fringe separation?
A. 16 X
B. 8 X
C. 4 X
D. 2 X
9 The terms phase difference and path difference are:
A. Same
B. Different
C. Equal
D. None of these
10 Optically active substance are those substance which
A. Produce polarization of polarized light
B. Rotate the plane of polarization of polarized light
C. Produce double refraction
D. Both a and b

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