Athin oil slick (no=1.50) floats on water (nw=1.33). when a beam of white light strikes this film at normal incidence from air, the only enhanced reflected colors are red (650 nm) and violet (390 nm). from this information, deduce the (minimum) thickness t of the oil slick.

The (minimum) thickness of the oil slick is 325 nm.

Explanation:

Let the (minimum) thickness of the oil slick =

Therefore:

2 = (+)*λ/       (1)

similarly,

2=()*λ/                                (2)

Thus, equation 1 = equation 2

(+*λ = (*λ

Where:

λ

λ

Therefore:

=650/390=5/3

This shows that,

=2

=1

Thus, using equation 2

=

show the wavelengths of a wave. show the crests of a wave.

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.