Problem $2$: $(20\%$ of Assignment Value$)$

A thin film of oil with index of refraction $n=1\mathrm{.}5$ and thickness $t=65nm$ floats on water. The oil is illuminated from above, perpendicular to the surface.

Part $($a$)$

What is the longest wavelength of light, in nanometers, that will undergo destructive interference when it is shone on the oil?

$=$

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Attempt$($s$)$ R

$2\%$ Dediutic

detailed viev

$1$

$2$

Hints: $1\%$ deduction per hint. Hints remaining: $3_{?}$

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Part $($b$)$

What is the next longest wavelength of light, in nanometers, that will undergo destructive interference when it is shone on the oil?

$=23\mathrm{.}50$

$x$ Attempts Remain

Part $($c$)$

What is the longest wavelength of light, in nanometers, that will undergo constructive interference when it is shone on the oil?