1. The problem statement, all variables and given/known data Hi everyone! This question is very simple, but I just cannot think of anything to explain it. The question is: A pillar in a concert hall can block the view of the audience but it has little effect on their hearing. Why? 1)Light is a transverse wave while sound is a longitudinal wave. 2)Light is a EM wave but sound is a pressure wave. 3)Light has a smaller/larger (cant remember) wavelength compared to sound. 4)Light travels faster than sound. All the options are tricky for me but I still put 2 as it is instinct (somewhat, but still no sense whatsoever). However, the answer is wrong and I still do not know the answer. Anyone help? Thanks.