InterviewSolution
Saved Bookmarks
| 1. |
The optical path difference between two identical waves arriving at a point is `371 lambda`. Is the point bright or dark ? If the path difference is `0.24 mm`, calculate the wavelength of light used. |
|
Answer» Given : Path difference `= 371 lambda` Path differences is an even multiple of `(lambda)/(2)`. Hence, the point will be bright, Path difference `= 37 lambda = 0.24 xx 10^(-3) m` `:. lambda = (0.24 xx 10^(-3))/(371)` `= 6.469 xx 10^(-7) m` `lambda = 6469Å` |
|