Answer:
A) because wave speed remains constant.
Explanation:
The wave speed of a wave in a medium depends on the nature of the medium.
For transverse waves in a string given by,
[tex]v = \sqrt{\frac{T}{m}}[/tex], T = tension , m = linear density
For longitudinal waves in a solid,
[tex]v = \sqrt{\frac{ξ}{ρ}}[/tex], ξ = modulus of elasticity, ρ = density
Like wise for different media, different properties and parameters govern the speed of waves moving through them.
It is important to mind in v = fλ ,f or λ does not influence on speed of wave in a medium but shows how f and λ varies as a wave propagate in a medium(/media).
Answer: A)
Explanation: A wave with a constant speed is inversely proportional to the wavelength. So, the wavelength would decrease as the frequency of wave increases.
