Coherent rays with an optical path difference m = 0.6 μm arrive at a certain point in space. determine whether

Coherent rays with an optical path difference m = 0.6 μm arrive at a certain point in space. determine whether there will be an increase or decrease in light at this point if the wavelength = 500nm.

t = 0.6 μm = 0.6 * 10-6 m.

λ = 500 nm = 500 * 10-9 m.

For coherent waves, to observe the maximum intensity, it is necessary that a pair of half waves be put into the difference in the path of the light rays m: m = ± 2 * n * λ / 2.

To observe the minimum intensity, it is necessary that a non-paired number of half waves be put into the difference in the path of the light rays m: m = ± (2 * n + 1) * λ / 2.

t * 2 / λ = 2 * 0.6 * 10-6 m / 500 * 10-9 m = 24 * 10-1.

We see that the pair number λ / 2 is put into the difference in the optical path of the light rays, and the maximum intensity will be observed.

Answer: at a given point in space, the maximum intensity of light rays will be observed.