One of the following can hear infrasound. This one is :
(a) dog (b) bat (c) rhinoceros (d) humans
One of the following can hear infrasound. This one is
(a) dog
(b) bat
(c) rhinoceros
(d) humans
Three different vibrating objects produce three of sounds X, Y and Z. The sounds X and Y cannot be heard by a man having normal range of hearing but sound Z can be heard easily. The sound X can be heard by a bat whereas the sound Y can be heard by a rhinoceros. What type of sounds are X, Y and Z ?