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

Try The 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

Which of the following is not an advantages of using optical fibres over copper cables?

Question # 2

We can observe only when the grating spacing is

Question # 3

The wave nature of light was proposed by

Question # 4

In Michelson interferometer if the moveable mirror is moved through a distance of 8λ then the number of fringes shifted are

Question # 5

A thin film is a transparent medium whose thickness with the wavelength of light are

Question # 6

A point source in a homogeneous medium gives rise to:

Question # 7

Two wave of intensities I an 4I superpose then the maximum and minimum intensities are

Question # 8

Commercial polarizing material is

Question # 9

A point on the surface of the mirror where principle axis meets is called

Question # 10

A planet is observed by an astronomical refracting telescope having an objective of focal length 16 m and an eyepiece of focal length 2 cm.

Question # 11

How many types of the optical fibres are

Question # 12

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

Question # 13

Inverse square law for luminance is valid for

Question # 14

Rainbow is formed due to combination of

Question # 15

The phenomenon of polarization proves that the light waves are

Question # 16

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 # 17

In Newton's rings the thickness of air film at the point of contact is

Question # 18

In Young's double slit experiment, the widths of dark and bright fringes are

Question # 19

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

Question # 20

Optically active substance are those substance which

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MCAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 The study of atomic structures of crystals by X-rays was started in
A. 1890
B. 1905
C. 1914
D. 1944
2 The typical wavelength of the signal which we sent in the optical fibre is
A. 1000 nm
B. 100 m
C. 1.3 mn
D. 1.3μm
3 The light source used in multimode step index fibre is
A. A monochromatic source
B. Red light
C. White light
D. None of these
4 The fine rulings on a compact disc as a diffraction grating but each line is wide like
A. 0.01 μm
B. 0.5 μm
C. 0.05 μm
D. 0.6 μm
5 The plane of polarization is rotated many degrees when a thickness of such crystal is
A. One millimeter
B. Less than one millimeter
C. A few millimeter
D. None of these
6 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
7 If the slits in YDS experiment are made closer, fringe spacing will
A. Increase
B. Decrease
C. Remain same
D. None of these
8 In Michelson interferometer if the moveable mirror is moved through a distance of 8λ then the number of fringes shifted are
A. 4
B. 8
C. 16
D. 32
9 Which of the following frequency ranges includes most of the electromagnetic waves emitted by the ultra - violet tubes used in a sun bed?
A. 5 x 105 to 5 x 108 Hz
B. 5 x 108 to 5 x 1011 Hz
C. 5 x 1011 to 5 x 1014 Hz
D. 5 x 1014 to 5 x 1017 Hz
10 We can achieve polarization by
A. Absorption
B. Reflection
C. Scttering
D. All of above

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