Athin film suspended in air is 0.425 μm thick and illuminated with white light that is incident perpendicularly on its surface. the index of refraction of the film is 1.45. at what wavelength will visible light reflected from the two surfaces of the film undergo fully constructive interference?

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .

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