Physics: A glass lens, nglass=1.52, has a 127 nm thick antireflective film coating one side, nfilm=1.39. White light, moving through the air, is perpendicularly incident on the coated side of the lens. What is the largest wavelength of the reflected light that is totally removed by the coating? Assume that nair=1.00.

A glass lens, nglass=1.52, has a 127 nm thick antireflective

rexard

24.01.2022

$\lambda = 706.12 nm$

Explanation:

The optical path length for the reflection of light = $2 n_{film} t$

For destructive interference, $2 n_{film} t = \frac{\lambda}{2}$

The thickness of the anti-reflective film = 127 nm

The largest wavelength of the reflected light, $\lambda = 4n_{film} t$

$\lambda = 4 * 1.39 *127 * 10^{-9}$

$\lambda = 706.12 * 10^{-9} m\\\lambda = 706.12 nm$

0,0(0 оценок)

franciscovazquez623

12.04.2022

$\huge\mathfrak {Answer}$

=》Because atoms of elements in the same group of the periodic table have the same number of neutrons, they have similar properties.

Hence the statement is False.

Thanks

0,0(0 оценок)