TNPSC Group 2 · 2012 Preliminary Examination
162.
A is the assertion and R is the reason. Examine these two statements carefully and select the answer using the code given below :
A : We are able to hear the sound behind the walls or obstacles
R : When the wavelength of a wave is comparable or less than that of an obstacle, diffraction happens.
Answer:
A.
Both A and R are individually true and R is the correct explanation of A