Physics - Wave Optics Question with Solution | TestHub
In a Young's double slit experiment, the source is white light. One of the holes is covered by a red filter and another by a blue filter. In this case
Options:
Answer:
Solution:
For a stable interference pattern to be formed, the two sources of light must be coherent, which means they must have the same frequency and maintain a constant phase difference.
When one slit is covered by a red filter and the other by a blue filter, the light emerging from the two slits will have different wavelengths and different frequencies.
Since the frequencies are different, the phase difference between the two waves will change rapidly with time, averaging out the interference term to zero over any practical observation time.
As a result, no stationary interference pattern can be formed on the screen, and only a general illumination will be observed. Therefore, there shall be no interference fringes.
Answer: there shall be no interference fringes.
