Problem 1P

Two sources emit waves that are coherent, in phase, and have wavelengths of 26.0 m. Do the waves interfere constructively or destructively at an observation point 78.0 m from one source and 143 m from the other source?

Solution 1P

Step 1 of 3

Here, we have to predict at a point, two light waves produces whether a constructive interference or destructive interference.

The equation for the path difference is,

Where, and are the distance to a point from different sources.

- Wavelength