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 diffraction of light occurs, due to interference, of

Question # 2

The distance between the top adjacent slits on diffraction grating is called

Question # 3

Wave front is the locus or all points in vibration are in the same

Question # 4

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

Question # 5

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

Question # 6

The light source used in multimode step index fibre is

Question # 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

Question # 8

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

Question # 9

Who gave the idea of light as wave ?

Question # 10

A convex lens is dipped in a liquid whose refractive index is equal to the material of the lens. Then its focal length will become

Question # 11

Which phenomenon of light conclusively prove that light waves are transverse waves

Question # 12

Magnification of a convex lens is

Question # 13

In an interference fringes pattern the fringes are

Question # 14

To get higher magnification we must use

Question # 15

Layer of oil on water in sunlight appears coloured due to

Question # 16

In the thin film, the path difference between the two reflecting waves depends upon

Question # 17

To get high resolving power for a telescope one should use

Question # 18

Identify the incorrect statement

Question # 19

For obtaining equal and same height mirror should be

Question # 20

Single mode step index fibre is used to send

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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 diffraction grating has 500 liens per mm. its slit spacing or grating element will
A. 500 mm
B. 5 x 10-3 mm
C. 2 x 10-5mm
D. 2 x 10-3mm
2 The practical use of services by optic fiber is
A. Two way television
B. World processing
C. Image transmitting and receiving equipment
D. All of these
3 When a mirror of a Michelsion's interferometor is moved a distance of 0.5 mm, 2000 fringes are observed, the wavelength of the light used is
A. 5000 mm
B. 5000°A
C. 500 cm
D. 2000°A
4 Inspite of different dispersion, all the wavelengths arrive at the other end of the fibre at the same time. With a step-index fibre overall time difference may be about
A. 40 ns
B. 30 ns
C. 32 ns
D. 33 ns
5 Which of the following converts electrical signals into light signals?
A. optical fibre
B. receiver
C. reflector
D. transmitter
6 The fringe spacing varies directly with
A. Distance L
B. Light of wavelength λ
C. Phase coherence
D. All of these
7 A normal to the waves front showing direction of propagating of wave is called
A. Photon
B. Particle
C. Ray
D. Line
8 The wavelength of X-rays is about
A. 10-14m
B. 10-10m
C. 10-6m
D. 10-4m
9 Light waves are:
A. Mechanical waves
B. Electromagnetic waves
C. All of above
D. None of above
10 We can observe only when the grating spacing is
A. of the order of the wavelength used
B. greater than the wavelength used
C. less than the wavelength used
D. any one of them

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