Light is described as having a dual wave-particle nature. which piece of evidence provides support for the model of light as a wave? (2 points)

a light causes electrons to be released when it strikes a metal surface.
b light reflects when it hits a surface.
c packets of energy called photons.
d light travels fastest through a vacuum.

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90