Back to WAVE OPTICS

JEE PHYSICS MCQ: WAVE OPTICS

1 Medium

1 of 1

Application +4 | -1

In an experiment to measure the speed of light by Fizeau's apparatus, following data are used : Distance between the mirrors

=12.0 \mathrm{~km}

, Number of teeth in the wheel

=180

. Find the minimum angular speed of the wheel for which the image is not seen.

View answer and explanation

Correct option: A

1.25 \times 10^4\,\mathrm{deg/sec}

Option A (

1.25 \times 10^4\,\mathrm{deg/sec}

) is correct because it calculates the minimum angular speed of the wheel using the Fizeau's apparatus formula.

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

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