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

If the angle of refraction is 90o, for which the angle of incidence is called

Question # 2

The Plano-convex lens used in the Newton's rings are of focal length

Question # 3

If yellow light emitted by sodium lamp in Young's double slit experiment is replaced by blue light of the same intensity:

Question # 4

Geometrical optics cannot give following characteristics for a microscope

Question # 5

A sun rise or sun set the sun looks reddish because

Question # 6

Which one of the following can act approximately as a source of monochromatic light:

Question # 7

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 # 8

In which situation does diffraction occur?

Question # 9

The light form Sun reaches earth in the form of

Question # 10

Which one the following gives three regions of electromagnetic sepctrum in order of increasing wavelength?

Question # 11

Resolving power of a telescope depends on:

Question # 12

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

Question # 13

Most widely used optical fibres are those which propagate light by

Question # 14

A completely transparent material will be invisible in vacuum when the refractive index n is

Question # 15

Intensities of the two waves of light are I and 4I.The maximum intensity of the resultant wave after superposition is

Question # 16

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

Question # 17

Which one of the following phenomenon cannot be explained by the wave theory of light ?

Question # 18

The distance between two concentric wave fronts is

Question # 19

A simple telescope is consists of

Question # 20

 In the phenomenon of interference, the bright and dark fringes are of

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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 double convex lens acts as a diverging lens when the object is
A. Between f and 2f
B. At the foucs
C. Inside the focus
D. All of these
2 Which one of the following phenomenon cannot be explained by the wave theory of light ?
A. Reflection
B. Refraction
C. Photoelectric effect
D. Diffraction
3 Which effect provides direct experimental evidence that light is a transverse rather than a longitudinal wave motion?
A. Light can be diffracted
B. Two coherent light waves can be made to interfere.
C. The intensity of light from a point source falls off inversely as the square of the distance from the source
D. Light can be polarized
4 Monochromatic light directly means waves of
A. Same frequency
B. Same color
C. Same wavelength
D. All of them
5 Fringe spacing ΔY is the distance between two adjacent bring fringes on the screen is
A. ΔY = Lλ/d
B. ΔY = Ld/λ
C. ΔY = dλ/L
D. ΔY = Lλ/d m
6 Which one of the following is nearly monochromatic
A. Light from candle
B. Light from simple lamp
C. Light from sodium lamp
D. Light from sun
7 Finger prints on paper are identified by sprinkling fluorescent powder on it and observing it under
A. Sun light
B. Sodium light
C. Infrared
D. UV
8 On a diffraction grating which thing acts as a slit
A. the lines which are ruled on it
B. the spacing between the lines
C. either of them
D. none of them
9 In Newton,s rings apparatus, we also use
A. Spectroscope
B. Telescope
C. Microscope
D. Turn table
10 The absence of light in the optical fibres represents the number
A. 0
B. 1
C. 2
D. -1

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