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 monochromatic light is incident, making certain angle, on a thin parallel film, the interference fringes formed are

Question # 2

Successive dark and bright fringes are formed each time the moveable mirror in Michelsion's interferometer is moved a distance

Question # 3

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

Question # 4

The angle of incidence at which angle of refraction becomes 900 is called

Question # 5

Spectrometer can be used to

Question # 6

The ratio of fringes with for bright and dark fringes is

Question # 7

Which of the following phenomenon cannot take place if we consider light as longitudinal wave?

Question # 8

The path difference and phase difference are related to each other as

Question # 9

The light source used in multimode step index fibre is

Question # 10

Due to Plano convex lens and the plane glass plate the thickness of air film changes from the center to outward

Question # 11

In Michelsion's interferometer, if a dark fringe is seen in the beginning, the next dark fringe will appear by moving the moveable mirror through a distance

Question # 12

Layer of oil on water in sunlight appears coloured due to

Question # 13

Sunset makes sky appears reddish because of:

Question # 14

Electromagnetic waves transport:

Question # 15

The image of an object 5 mm length is only 1 cm high. The magnification of the lens is

Question # 16

If the two reflected waves reinforce each other then the firm as seen from the parallel beam of monochromic light will look

Question # 17

The distance between the concentric wavefronts is

Question # 18

Michelson's interferometer is an instrument used to measure the distance with

Question # 19

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

Question # 20

How the fringe spacing varies as the separation of the slits increases

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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 An object is placed between the focus and the optical center of the convex lens. The image formed is
A. Real, erect and magnified
B. Virtual, inverted and magnified
C. Virtual, erect and diminished
D. Virtual, erect and magnified
2 According to WH Bragg and WL Bragg monochromatic beam of X-rays was reflected form a crystal plane is like a
A. Smooth and regular
B. Mirror
C. Thin film
D. None of these
3 The interference fringes are of
A. equal width
B. variable width
C. zero width
D. non-uniform width
4 In Young s experiment the distance between two adjacent fringes for blue light is than that for green light
A. Lesser
B. Greater
C. Equal
D. Lesser if distance between source and screen is large
5 When the same object is viewed at a shorter distance the image on the retina of eye is ______ and so the object appears ______
A. Greater, small
B. Smaller, smaller
C. Smaller, larger
D. Greater, larger
6 A typical diffraction grating has lines per centimeter is about
A. 500 to 6000
B. 400 to 5000
C. 450 to 5500
D. 425 to 5670
7 Wavelength of X-rays falling at a glancing angle of 30° on a crystal with atomic spacing 2 x 10-10m for first order diffraction is
A. 4 x 10-10m
B. 2 x 10-10m
C. 0.2 x 10-10m
D. 20 x 10-10m
8 The phase difference between two points on a wave front will be
A. 0°
B. 4π
C. 2π
D. π/2
9 In Michelsons interference the movable mirror is moved and a shift of two fringes is observed then the distance moved by the mirror is
A. λ/2
B. λ
C. 2λ
D. None
10 If f = 5 cm and d = 25 cm then the magnification will be
A. 2
B. 4
C. 5
D. 6

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