A light beam is incident from a medium with n_1 through a thin layer of a substa

Question

A light beam is incident from a medium with n_1 through a thin layer of a substance with n_2 into a medium with n_3 (layer darkness in the figure does not indicate the relative magnitudes of the indices of refraction). If n_1 = 1.3 n_2 = 2.1 n_3 = 1.6, and the thickness of the middle layer is 60 nm, for which (visible) wavelength does the reflected beam undergo constructive interference If instead n_2 = 1.6 and n_3 = 2.1, which one of the following would be true for the same wavelength Interference would still be constructive. Interference would now be destructive. Neither constructive nor destructive.

Explanation / Answer

we know that

2n2 x t /wavelength = 0.3809

answer ( neither constructive nor destructive )

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.