All the conditions are in the pic i attached.
If u still need help send the choices in the comments and I’ll answer:)
Answer:
The correct answer is option b, 0.3m/s
Step by Step solution:
The relation between speed, wavelength and frequency of a wave is given by the following equation:
Speed = Wavelength x Frequency
Substituting the values in above equation we get –
= 3 x 0.1
= 0.3 m/s
A flow of exhaust gasses from a jet engine