9. T/Fa. Perfect absorbers of electromagnetic radiation are also perfect emitters.b. At any instant in time, it is possible to specify simultaneously the position and themomentum of a particle to arbitrarily high precision.C.The ground state is the lowest energy level in an atom.d. Certain types of sunglasses are very effective at diminishing light reflected from surfacesbecause of polarization.e.A light ray bends when it goes from one medium to another because of diffraction.

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