Physics Test.8

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Physics Test-8, test of physics class 9, physics quiz questions, electrostatic quiz, general physics mcqs.

Physics Test-8 covers different subjects, such as physics class 9 assessments, quiz questions on electrostatics, and general physics multiple-choice questions. It is an important tool for evaluating comprehension and preparedness for academic difficulties. Engage in Physics Test-8 to effectively delve into these subjects and improve your readiness. For additional study tools and resources customized to your requirements, visit Nokryan.com, where you can discover valuable materials to support your learning process.

Physics Test.8

Quiz Instructions:

There will be 20 multiple choice question in this online test.
Answer of the questions will change randomly each time you start this test.
Practice this test at least 3 times if you want to secure High Marks.
At the End of the Test you can see your Test score and Rating.

1 / 20

When one mirror of a Michelson Interferometer is moved a distance of 0.5 mm we observe 2000 fringes. What will be wavelength of light used ?

A. 5000 nm

B. 5000A

C. 500m

D. 2000um

2 / 20

Wavelength of X-rays falling at glancing angle of 30? on a crystal with atmic spacing 2 x 10-10 for the fist order diffraction is________________?

A. 4 x 10-10 m

B. 2 x 10-10 m

C. 0.02×10-10m

3 / 20

In a plane polarized light _________________?

A. vibration in all direction

B. vibration in two mutually perpendicular directions

C. vibration take place in a direction perpendicular to the direction of propagation of light

4 / 20

Which one of the following cannot be polarized ?

A. radio waves

B. ultraviolet rays

C. X-rays

D. sound waves

5 / 20

In monochromatic red light a blue book will probably appear to be_________________?

A. black

B. purple

C. green

6 / 20

In double slit experiment if one of the two slit is covered then________________?

A. no interference fringes are observed

B. no diffraction fringes are observed

C. no fringes observed

7 / 20

In the shadow of a ball the central portion appears bright that happens due to_________________?

A. Interference

B. Diffraction

C. Polarization

8 / 20

Crystals of a material can behave as_________________?

A. Convex lens

B. Interferometer

C. Diffraction grating

9 / 20

Which is not optically active ?

A. sugar

B. tartaric acid

C. water

10 / 20

When light incident normally on thin film the path difference depends upon ________________?

A. thickness of the film only

B. nature of the film only

C. angle of indidence only

D. all thickness nature and angle of incidence

11 / 20

Light reaches the earth form sun in nearly____________________?

A. 15 minutes

B. 10 minutes

C. 8 minutes

D. 8 minutes 30 seconds

12 / 20

According to Einstein light travels form one place to another in the form of ________________?

A. waves

B. particles

C. photons

13 / 20

Central spot of Newtons rings __________________?

A. bright

B. dark for large wavelength

C. dark

D. bright for large wavelength

14 / 20

The locus of all points in a medium having the same phase of vibration is called____________________?

A. crest

B. trough

C. wavelength

D. wave front

15 / 20

Two sources of light are coherent if they emit rays of_______________?

A. same wavelength

B. same amplitude of vibration

C. same wave length with constant phase difference

16 / 20

The velocity of light was determined accurately by_______________?

A. Newton

B. Michelson

C. Huygen

17 / 20

appearance of colour in thin films is due to ____________________?

A. diffraction

B. dispersion

C. interference

18 / 20

A light ray traveling form rarer to denser medium suffers a phase change of__________________?

A. 60°

B. 90°

C. 180°

19 / 20

Diffraction effect is____________________?

A. more for a round edge

B. less for a round edge

C. more for a sharp edge

20 / 20

A diffraction grating has 500 lines per mm. Its slit spacing or grating element will be equal to ____________________?

A. 500 mm

B. 5 x 10-3 mm

C. 2 x 10-5 mm

D. 2 x 10-3 mm

Your score is

The average score is 65%

Physics Test-8, test of physics class 9, physics quiz questions, electrostatic quiz, general physics mcqs.

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