Question

Fill in the blanks with approriate word:
a. The region in a sound wave, with higher pressure and density is called................ and that with low pressure and density is called........... .

b. Medium is ....................... for generation of sound.

c. The total number of compressions and rarefactions produced per second in a sound wave is 1000. The frequency of the sound wave is.................. .

d. Different sound notes have different.............. .

e. In loudspeaker................energy is converted into..................energy.

Answer 1

a. The region in a sound wave, with higher pressure and density is called compression and that with low pressure and density is called rarefaction.

b. Medium is required for generation of sound.

c. The total number of compressions and rarefactions produced per second in a sound wave is 1000. The frequency of the sound wave is 500 Hz (One compression and rarefaction together makes a cycle of sound wave).

d. Different sound notes have different frequencies.

e. In loudspeaker electrical energy is converted into sound energy.