Which frequency is used by elephants to communicate with each other:
Zero frequency
Low frequency
Medium frequency
High frequency
The technique or method used to absorb undesirable sounds by soft and porous surface is called:
Ultrasonic
Acoustic protection
Infrasonics
Echo
Ultrasound waves carry energy:
Less
More
Equal
None of these
Mice can hear frequencies upto:
100, 000 Hz
25.000 Hz
120,000 Hz
1,000 Hz
The pitch of a sound is most closely related to its:
Wave form
Period
Amplitude
Frequency
NOT gate is also called:
Converter
Inverter
Transmitter
Receiver