JEE PHYSICS MCQ: WAVE OPTICS

1 Medium

1 of 1

Understanding +4 | -1

In the phenomena of diffraction of light, when blue light is used in the experiment in spite of red light, then

View answer and explanation

Correct option: A

fringes will become narrower

Option A (fringes will become narrower) is correct because the fringe width in diffraction is directly proportional to the wavelength, and blue light has a shorter wavelength than red light.

More Questions from WAVE OPTICS

Practice All Chapter MCQs →

Which of the following properties of electromagnetic waves does not support particle nature of radiation (electromagnetic wave)? Spherical wavefronts, emanating from a point source, strike a plane reflecting surface. What will happen to these wave fronts, immediately after reflection? An astronomical telescope is able to resolve two stars at an angular separation of

10^{-3}

degree. If wavelength of light used is

500 {~nm}

, then the diameter of the objective of the telescope is An interference pattern was made by using red light. If the red light changes with blue light, the fringes will become H-polaroid is prepared by Specific rotation of sugar solution is

0.01\;SI

units.

200\;kg{m^{ - 3}}

of impure sugar solution is taken in a polarimeter tube of length

0.25\;m

and an optical rotation of

0.4\;rad

is observed. The percentage of purity of sugar is the sample is