Amaterial having an index of refraction of 1.35 is used as an antireflective coating on a piece of glass (n = 1.50). what should be the minimum thickness of this film in order to minimize reflection of 560 nm light?

103.70 nm

Explanation:

The minimum thickness of the film is given by where is the wavelength and n is the index of the refraction

We have n =1.35

Wavelength

So the minimum thickness of the film

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

d is the correct answer