Quality (or timbre) of a sound depends on:

In a test,a subsonic jet flies overhead at an altitude of $100 \, m$. The sound intensity level on the ground as the jet passes overhead is $160 \, dB$. At what altitude should the plane fly so that the ground noise is not greater than $120 \, dB$?

In the musical octave 'Sa','Re','Ga',which of the following statements is correct regarding their frequencies?

The power of sound from the speaker of a radio is $20 \text{ mW}$. By turning the knob of the volume control,the power of the sound is increased to $200 \text{ mW}$. The power increase in decibels as compared to the original power is $.... \text{ dB}$.

The intensity of sound during the festival season increased by $100$ times. This could imply a decibel $(dB)$ level rise from

Two waves having sinusoidal waveforms have different wavelengths and different amplitudes. They will have: