Qualities of Sound

A mosquito produces a sound of high pitch. Justify the statement. 

Write a short note on pitch.

What are the units of intensity and loudness of sound

What is the relation between intensity and loudness of a sound

The relation between amplitude of a wave and its intensity is

Define relationship between intensity and loudness of sound

Pitch of sound is related to its

 For any sound to possess timbre, it must have:

Explain what is timbre?

Which wave property determines pitch?

Name the characteristic which helps us distinguish between a man's voice and a woman's voice, even without seeing them.

A sound level meter placed in front of the loudspeaker of a $60 \mathrm{W}$ and audio system reads $70 dB.$ All else being equal, when placed in front of $120 \mathrm{W}$ system, the meter will read ('x' in dB). Write $\frac{x+7}{10}$ as your answer. (x is in nearest integer and ${\log }_{10}2=0.30$ ).

Shortening of strings of a guitar can lower its pitch.

Select the loudness of whisper.

If two sound waves, $y_1=0.3\sin 596\pi \left[t-\frac{x}{330}\right]$ and $y_2=0.5\sin 604\pi \left[t-\frac{x}{330}\right]$ are superimposed, the ratio of maximum and minimum intensities of beats is?

A sound source emits sound waves in a uniform medium. If the energy density is $E$ and the maximum speed of the particles of the medium is $v_{\max }$. The plot between $E$ and $v_{\max }$ is best represented by

The sound level near a noisy air conditioner is $70 \mathrm{dB}$. If two such units operate side by side, the sound level near them would be

A dog is barking at the rate $4\pi \mu W.$ Sound level at a point $10 \mathrm{m}$ away from the dog is

At $120 dB$ sound level intensity of sound is $1 \mathrm{W}/{\mathrm{m}}^2.$ Now at sound level $121 dB$ intensity will be-

Graphically differentiate between high pitch sound and low pitch sound.