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Light of wavelength \( \lambda \) in vacuum strikes a lens that is made of glass with index of refraction 1.6. The lens has been coated with a film of thickness \( t \) and index of refraction 1.3. For which one of the following conditions will there be no reflection?
(A) \( 2 t=\frac{\lambda}{2} \)
(B) \( 2 t=\frac{1}{2}\left(\frac{\lambda}{1.3}\right) \)
(C) \( 2 t=\frac{\lambda}{1.33} \)
(D) \( 2 t=\frac{1}{2}\left(\frac{\lambda}{1.6}\right) \)
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