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

To get higher magnification we must use

Question # 2

In thin film colours are due to

Question # 3

An object is placed between the focus and the optical center of the convex lens. The image formed is

Question # 4

A diffraction pattern is obtained using a beam of red light What will happen if the red light is replaced by blue light?

Question # 5

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

Question # 6

The magnifying power of an instrument is expressed in

Question # 7

The different parts of spectrometer

Question # 8

The light source in the transmitter can be either

Question # 9

Cladding means a layer of ______ refractive index over the central core of ______ refractive index

Question # 10

When light travels from one medium to another which are separated by a sharp boundary the characteristic which does not change is

Question # 11

In Young's double slit experiment, the fringe width depends on

Question # 12

The fine rulings on a compact disc as a diffraction grating but each line is wide like

Question # 13

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

Question # 14

The relation between displacement of the mirror 'L' and wavelength λ of the light used

Question # 15

A prism splits a beam of white light into seven component colors. This is so because

Question # 16

Television signal are converted into light signals by

Question # 17

A diffraction grating of length 2cm has 4000 lines The grating element is

Question # 18

In Newton's rings the point of contact of the lens and the glass plate, the air film is

Question # 19

The critical angle for a ray of light suffering total internal reflection will be smallest for the ray traveling from

Question # 20

Which part of the spectrum is most visible?

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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 When an image formed by the objective lies at the focus of both the objective and the eye-piece, the telescope is said to be in
A. Final adjustment
B. Normal adjustment
C. Initial adjustment
D. None of these
2 A ray of light always points
A. Anti parallel to wave front
B. Perpendicular to wave front
C. Parallel to wave lets
D. None
3 The light source in the transmitter can be either
A. Light emitting diode
B. Semiconductor laser
C. Light emitting in an invisible infra red
D. All of these
4 In a simple microscope if the final image is located at infinity then its magnifying power is
A. 25/f
B. 25
C. f/25
D. [1 + (25/f)]
5 According to Huygen's principle, the new position of the wavefront after a time can be found by constructing a surface that touches all the
A. primary wavelets
B. secondary wavelets
C. either of them
D. none of them
6 How many fringes will pass a reference point if the moveable mirror of a Michelson s interferometer is moved 0.06 mm The wavelength of light used is 5.89 x10-3 mm
A. 200
B. 300
C. 20.4
D. 2.3
7 A diffraction grating contains 5000 lines per centimeter, its grating element will be
A. 1 x 10-4nm
B. 1 x 10-14m
C. 1 x 10-14cm
D. 1 x 10-4cm
8 Basic principle of an optical fibre is
A. Reflection
B. Scattering
C. Polarization
D. Total internal reflection
9 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
10 Power loss taken place when a light signal travels along fibres by
A. Multiple reflection
B. Light absorbed due to impurities in glass
C. At joint some light is scattered by group of atoms
D. All of these

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