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

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

Question # 2

Snell's Law is defined as

Question # 3

A typical diffraction grating has lines per centimeter is about

Question # 4

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

Question # 5

The waves propagate in space by the motion of the

Question # 6

Experimental demonstration of wave nature of light was given in 1801 by:

Question # 7

According to Huygen's principle:

Question # 8

In cause of YDS experiment, the distance between adjacent bright fringes is given by

Question # 9

The speed of light in a medium depends upon

Question # 10

Which of the following frequency ranges includes most of the electromagnetic waves emitted by the ultra - violet tubes used in a sun bed?

Question # 11

In thin film colours are due to

Question # 12

If the magnification M1 = 20.0 for objective and M2 = 12.0 then total magnification is

Question # 13

Conventionally, all the distances p, q, f, are measured from ______ of the lens

Question # 14

Single mode step index fibre is used to send

Question # 15

Alexander graham bell transmits a voice message via a

Question # 16

In Newton's rings the thickness of air film at the point of contact is

Question # 17

To get higher magnification we must use

Question # 18

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

Question # 19

In a never system, the repeaters are placed at about

Question # 20

The light signal in graded index fibre is totally confined due to

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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 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
2 Sunset makes sky appears reddish because of:
A. Diffraction of sun rays
B. Refraction of light
C. Scattering of light from dust particles
D. Polarization of ligth
3 Which one the following gives three regions of electromagnetic sepctrum in order of increasing wavelength?
A. Gamma rays, micro waves, visible light
B. Radio waves, ultraviolet waves, X-rays
C. Ultraviolet rays, Infrared rays, micro waves
D. Visible light, gamma rays, radio waves
4 Which one of the following waves cannot be polarized
A. Radio waves
B. X-rays
C. Transverse waves in a string
D. Longitudinal waves in a gas
5 In multimode graded index fibre core and cladding has boundary
A. Noticeable 
B. No noticeable
C. No boundary
D. None of these
6 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
7 The magnification is negative for
A. Real image
B. Virtual image
C. Sometimes for real sometimes for real
D. Only for cancave lens
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 Due to dispersion effects, white light source is useful for
A. Long distance
B. Short distance
C. Very long distances
D. None of these
10 The length of the standard metre measured by Michelsion's interferometer comes out to be
A. 1,553, 163.5 wavelength
B. 1553.5 wavelength
C. 155316.5 wavelength
D. none of them

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