0
A) 0 to 20 Hertz
B) 20 to 200 Hertz
C) 20 to 2000 Hertz
D) 20 to 20000 Hertz
Correct Answer: D
Please Wait you are being redirected....
You need to login to perform this action.You will be redirected in 3 sec
OTP has been sent to your mobile number and is valid for one hour
Your mobile number is verified.