A Silicon Monoxide (N = 1

A silicon monoxide (n = 1.45) film of 101.7 nm thickness is used to coat a glass camera lens (n = 1.56) .What wavelength of light in the visible region (390 to 710 nm) will be most efficiently transmitted by this system? (1 nm = 10−⁹ m)

A) 472 nm
B) 697 nm
C) 649 nm
D) 590 nm
E) ​413 nm