Loudness of sound is measured in

The audible range of frequency for an average person is

The loudness of sound is considered normal if it is between ……...

The decibel level of jet engine taking off is ………

Quality of a musical note depends on ………

Sound of frequency less than 20 Hz is known as …………  sound.

Sound of frequency greater than 20 kHz is known as …………

The sounds heard by bat is upto ………

The maximum limit sounds heard by dog is …………

The unit for intensity of sound is ………

Echo is a reflected sound, reaches our ear, after direct sound in

Using ultrasounds in the imaging of organs like liver, uterus, etc. is called as

The location of under water objects can be determined by using

As age increases, the audible range of frequency of sound ……

Sound travels in a medium means