The speed V of a longitudinal wave is given by :

1. V = $\dfrac{1}{d} \sqrt {γP}$
2. V = $\sqrt {γP}$
3. V = $\sqrt\dfrac{T}{m}$
4. V = $\sqrt\dfrac{γP}{d}$

The speed V of a transverse wave is given by :

1. V = $\sqrt\dfrac{T}{m}$
2. V = $\sqrt\dfrac{γP}{d}$
3. V = $\sqrt {Tm}$
4. V = $\dfrac{1}{d} \sqrt {γP}$

Due to vibrations of medium particles, the energy transformation is from :

1. heat energy to kinetic energy and vice versa
2. kinetic energy to potential energy and vice versa
3. heat energy to potential energy and vice versa
4. potential energy to nuclear energy and vice versa

With the increase in temperature of a gas, the speed of sound:

1. decreases
2. increases
3. remains the same
4. cannot say