At compressions, the density and pressure of a medium is ……………, while at rarefactions the density and pressure of a medium is ……………

1. minimum, minimum
2. minimum, maximum
3. maximum, maximum
4. maximum, minimum

Wave velocity is also defined as the ………….. with which ………….. is transferred from one place to another place by wave motion.

1. speed, energy
2. speed, compression
3. speed, rarefaction
4. velocity, pressure

The speed of sound in air is not affected by change in :

1. temperature
2. moisture
3. pressure
4. density

The speed of sound in a gas is given by :

1. V = $\sqrt\dfrac{P}{\gamma ρ}$

2. V = $\sqrt\dfrac{\gamma P}{ρ}$

3. V = $\sqrt\dfrac{\gamma ρ}{P}$

4. V = $\sqrt{\gamma ρP}$