Q. 4

In the original Fizeau method, the light travelled 8.6 km and then returned. What could be the difficulty if this distance is taken as 8.6 m?

Answer :

If the distance travelled by the light is reduced, then the image obtained from the experiment will be too dark to make any substantial observation regarding the objective of the experiment i.e. to measure the speed of the light. The apparatus kept at large distance allows the viewer to see the flickering of the light clearly as the image formed by the reduced intensity of the light enables a moderately clear view. Although in case the distance is decreased to 8.6 m, the intensity of the light will be too high to allow for a clear sharp view from the telescope.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Speed vs Velocity & Distance vs Displacement36 mins
Interactive Quiz on Algae32 mins
Lecture on Algae46 mins
Modifications of stem49 mins
Goprep Genius | Atomic Structure49 mins
Pseudo ForceFREE Class
Stem and its modificationsFREE Class
Interactive Quiz on Plant TissuesFREE Class
Features, similarities and dissimilarities between bryophytes and pteridophytes51 mins
How to correlate the features of multicellular algae and protists57 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses

The speed of light is 299,792,458 ms-1

HC Verma - Concepts of Physics Part 1