Question

a b c and d produce sound of equality 22 Hz 3000 Hz 30000 Hz and 20000 Hz respectively which of these sound cannot hear by human? justify your answer​

Answer 1

Only 30000 Hz which is c can't be heared by human as human ability is to listen from 20Hz to 20000Hz. But 30000Hz is more than 20000Hz

Answer 2

30000hz bro. hope it's helpful