Question

The speed of sound doubles from 330 m/s to 660m/s going from air to a vibrating tuning fork.

Answer 1

Lets learn the relationship

$\\ \rm\dashrightarrow \lambda=\dfrac{v}{\nu}$

$\\ \rm\dashrightarrow \nu=\dfrac{v}{\lambda}$

$\\ \rm\dashrightarrow \nu\propto \lambda\propto v$

Hence.

frequency and wavelength will be. doubled also