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

When the object is closer to eye or near point, the image becomes

Question # 2

Light of wavelength 800 n m is incident on a pair of slits, forming fringes 4.0 mm apart on a screen. What is the fringe when light of 400 nm is used and the slit separation is halved?

Question # 3

To demonstrate the phenomenon of interference we require two sources that emit radiation

Question # 4

For a monochromatic light passing from air to glass, which one of the following statement is true?

Question # 5

If the plane polarized light is incident on the second sheet of Polaroid, no light is emitted when their axes are

Question # 6

The locus of all the points in the same phase of vibration is called:

Question # 7

The phenomenon of diffraction also contains the phenomenon of

Question # 8

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

Question # 9

Huygen's wave theory of light cannot explain

Question # 10

In which of the optical fibres, the propagation of light signal is through continuous refraction?

Question # 11

A spectrum which contains all wavelengths without any break is called

Question # 12

Who gave the idea of light as wave ?

Question # 13

Power of a lens is equal to

Question # 14

The difference between 1st ring fringe and 1st dark fringe is measured as

Question # 15

In Michelsion's interferometer, if 'm' number of fringes are passed in front of a reference point when the moveable mirror is moved a distance L, then

Question # 16

A diffraction grating has 500 liens per mm. its slit spacing or grating element will

Question # 17

Which device converts the light signals which these amplified and decoded

Question # 18

Which effect provides direct experimental evidence that light is a transverse rather than a longitudinal wave motion?

Question # 19

Using a graded index fibres the time difference is reduced to about

Question # 20

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

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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 Propagation of light in an optical fibre requires that the light should
A. be partially confined within the fibre
B. be totally confined within the fibre
C. not be confined within the table
D. none of them
2 In Newton s rings the central spot appears dark due to
A. Phase change
B. Destructive interference
C. Small eye piece of optical device
D. Both a and b
3 In Huygen's wave theory the locus of all points in the same state of vibration is called
A. A half-period zone
B. Vibrator
C. Wave front
D. A ray
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 Which one of the following phenomena is not explained by Huygen's construction of wavefront?
A. Refraction
B. Reflection
C. Diffraction
D. Origin of spectra
6 Single mode step index fibre is used to send
A. white light
B. green light
C. a strong monochromatic light
D. yellow light
7 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
8 The distance between the centres of two consecutive bright fringes (or dark fringes) is called
A. wavelength
B. fringe width
C. amplitude
D. path difference
9 The least distance of distinct vision changes with
A. Time
B. Health
C. illness
D. Age
10 Due to dispersion effects, white light source is useful for
A. Long distance
B. Short distance
C. Very long distances
D. None of these

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