Question

Which of the following is the best prediction of what would happen if the distance across section 1 in the diagram were to decrease?

1. Frequency would increase
2. Energy would decrease
3. Wavelength would increase
4. Amplitude would decrease

Answer 1

Option (1)

Step-by-step explanation:

Relation between wavelength and frequency of a wave is,

Wavelength (λ) ∝
`\frac{1}{\text{Frequency}}`

That means wavelength is inversely proportional to the frequency of a wave.

When the wavelength of the wave is decreased, frequency of the wave will increase.

Therefore, if the distance across section 1 is decreased in the given picture,

wavelength gets decreased.

As a result frequency of the wave will increase.

Option (1) will be the answer.