Multiple Choice Question (MCQ)
Question: Which is the cause for changing the permeability?
A.
Length
B.
Flux density
C.
Field intensity
D.
Magneto motive force
Correct Answer: Flux density
Explanation
The sound frequency range refers to the range of frequencies that can be detected and perceived by the human ear. Sound is a mechanical wave that propagates through a medium such as air or water, and it can be characterized by its frequency and amplitude.
The range of frequencies that can be perceived by the human ear is typically between 20 Hz and 20,000 Hz(20 Khz).