Two beams of coherent radiation with an optical path difference of 2.0 μm arrive at a certain point on the screen.
| March 28, 2021 | education
Two beams of coherent radiation with an optical path difference of 2.0 μm arrive at a certain point on the screen. What happens: an increase or decrease in the light? Light wavelength 600 nm.
These tasks: Δd (optical path difference of the indicated radiation beams) = 2 μm = 2 * 10 ^ -6 m; λ (light wavelength) = 600 nm = 6 * 10 ^ -7 m.
1) Find the number of half-wavelengths: k = 2 * Δd / λ = 2 * 2 * 10 ^ -6 / (6 * 10 ^ -7) = 6.67.
2) The obtained value of k is an odd and non-integer number, then the light should be attenuated.
Answer: There will be a weakening of the light.
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