Sound of which frequency can be heard by human beings :
A. 5 vib /sec
B. 500 vib /sec
C. 27000 vib / sec
D. 50, 000 vib /sec.
Answer:B
Sound of which frequency can be heard by human beings :
A. 5 vib /sec B. 500 vib /sec C. 27000 vib / sec D. 50, 000 vib /sec.