Q

Sound waves cannot travel through:

RRB NTPC (Stage-I); RRB ALP & Technician; RRB Group-D 28/04/2016 (Shift-II); 13/08/2018 (Shift-III); 09/10/2018 (Shift-I) 2016; 2018
✓ Answer: C Vacuum
Sound requires matter and cannot propagate through a vacuum.
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