Answer:
f = 500 x 10^12Hz
Explanation:
E=hc/wavelength
E=hf
hc/wavelength =hf
c/wavelength =f
f = 3 x 10^8 / 600 x 10^-9 = 500 x 10^12Hz
I think D
if energy is added,it wont stay the same,I beleive D is the only one that makes since,sorry if wrong
it does not mirror the image
25cm is the answer I think
option D is right
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