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

In young s interference experiment one slit is covered with a cellophane paper which absorbs half the intensity then

Question # 2

In compound microscope image formed is

Question # 3

In Young's double slit experiment fringe width (or fringe spacing) depends

Question # 4

For interference to occur, the light coming from the two slits should

Question # 5

A line normal to the wavefront including the direction of motion is called

Question # 6

The magnifying power of a simple microscope can be increased if we use eye piece of

Question # 7

The ratio of size of the image to the size of the object is called

Question # 8

In single slit diffraction the condition for second minimum is

Question # 9

How many major components of fibre optic communication system are

Question # 10

A convex lens has focal length F.An object is placed at P then

Question # 11

Which of the following radiation will be focused farthest from a convex lens

Question # 12

A glass plate on which a large number of very fine equidistant parallel lines are drawn is called

Question # 13

The plane of polarization is rotated many degrees when a thickness of such crystal is

Question # 14

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

Question # 15

Certain light of wavelength 600 nm is used to view an object under the microscope. If the aperture of its objective is 1.22 cm, then the limiting angle of resolution will be

Question # 16

A convex lens of focal length 5 cm is used as magnifying glass Its magnifying power when the image is formed at infinity

Question # 17

The time taken by light for its passage from M to m and back is

Question # 18

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

Question # 19

Proportion of light in an optical fibre requires that the light-should be within the fibre

Question # 20

In Michelson's interferometer , the plates are placed in front of incident ray at an angle 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 Monochromatic light means waves of:
A. Same frequency
B. Same colour
C. Same wavelength
D. All of them
2 To observe interference of light the condition which must be met with is that the sources must be:
A. Monochromatic
B. Phase coherent
C. Both of above
D. None of above
3 The fringe spacing in case of red light
A. Increases
B. Decreases
C. Remains the same
D. None of these
4 According to Young s experiment if frequency of light used is halved then fringe width becomes
A. 2/3
B. Double
C. Remains constant
D. Fringe
5 In Bragg's formula, the path difference should beam integral multiple of the wavelengths
A. d sin θ = nλ
B. d sin 2θ = nλ
C. 2 d sin θ = nλ
D. None of these
6 The refractive index of a medium is defined as a ratio
7 The resolving power of human eye is
A. 1° 
B. 2°
C. 3°
D. 6°
8 The Plano-convex lens used in the Newton's rings are of focal length
A. Small
B. Long
C. Very large
D. None of these
9 If focal length of objective is increased
A. Magnifying power of compound microscope decreased
B. Magnifying power of astronomical telescope increases
C. The diameter of the objective lens
D. None of these
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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