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

Conditions for interference are that the two sources should be coherent and:

Question # 2

Wavelength of X-rays falling at glace angle 30° on crystal with atomic spacing 2 x 10-9m for the first order diffraction is

Question # 3

A limited region taken on a wavefront which is far away form the source is

Question # 4

In a astronomical telescope the final image for normal vision is formed at

Question # 5

The difference between 1st ring fringe and 1st dark fringe is measured as

Question # 6

In compound microscope the focal length of eye piece is

Question # 7

A spectrometer is used to find

Question # 8

The diffraction of light occurs, due to interference, of

Question # 9

Which of the following is an optical fibre in which the density of central core decreases towards its periphery?

Question # 10

In YDS experiment, the condition for constructive interference of two coherent waves is that the path difference should be

Question # 11

The angle with the horizontal at which an underwater swimmer will see the setting sun is

Question # 12

The image formed after objective lens of an astronomical telescope is

Question # 13

Choose the correct statement

Question # 14

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

Question # 15

Sunset makes sky appears reddish because of:

Question # 16

To get high resolving power for a telescope one should use

Question # 17

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

Question # 18

Bending of light around sharp edges is known as

Question # 19

A ray of light reflected from a dense medium under goes a phase change of:

Question # 20

The idea of Michelsion's interferometer is based on the

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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 a light signal travels along the length of the optical fibre, the power lost by it is due to
A. Reflection
B. Refraction
C. Seattering and absorption
D. Diffraction
2 Michelson interferometer is based upon
A. Interference
B. Diffraction
C. Polarization
D. Reflection
3 Layer of oil on water in sunlight appears coloured due to
A. diffraction of light
B. dispersion
C. interference of light
D. polarization of light
4 The light source in the transmitter can be
A. semiconductor laser
B. LED
C. both of them
D. either of them
5 Polaristion is a phenomenon associated with a certain type of wave.
Which condition must be fulfilled if the wave is to be polarised?
A. It must be a light wave
B. It must be a longitudinal wave
C. It must be a light wave
D. It must be a transverse wave
6 The distance between the top adjacent slits on diffraction grating is called
A. element
B. grating element
C. aperture
D. slit
7 The light signals are sent from the source
A. A ordinary source
B. A monochromatic light source
C. A moulticolour source
D. None of these
8 An optical fiber of ______ cm in diameter id equivalent to 7.62 cm diameter bundle of ______ wires to carry the same amount of signals
A. 0.6, aluminum
B. 6.0, copper
C. 0.6, copper
D. 6.0, aluminum
9 A convex ens acts as diverging lens when the object is placed
A. Between F and 2F
B. At 2F
C. Within the focal length
D. Beyond 2F
10 A usual way to obtain a plane wave is to place point source of light at the focus of a
A. concave lens
B. convex lens
C. both of them
D. either of them

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