Question

The diagram below shows the distance traveled by two light waves in 1 second.

Two light waves presented over a scale of time, demonstrating the waves over 1 second of time. Wave 1 shows 5 wavelengths occurring over 1 second. Wave 2 shows 10 wavelengths occurring over 1 second.

Based on the diagram, which of these conclusions is correct about the two waves?

A) They have equal frequencies.

B) They have equal wavelengths.

C) The amplitude of Wave 2 is double the amplitude of Wave 1.

D) The frequency of Wave 2 is double the frequency of Wave 1.

Answer 1

Answer: The correct answer is option D.

Step-by-step explanation:

Wavelength is the distance between two crests or two troughs.

Amplitude is defined as the the maximum distance that is moved by a particle on a wave measured from its equilibrium position.

Frequency is defined as the number of oscillations happening in 1 sec.

We are given that two light waves. Wave 1 shows 5 wavelengths in 1 second and Wave 2 shows 10 wavelengths in 1 second.

These two waves cannot have same wavelengths and frequency.

Amplitude cannot be determined fro the given data.

Wave 2 has twice the number of wavelengths than Wave 1 and hence, will have twice the frequency than the Wave 1.

`\\u_2=2\\u_1`

Hence, the correct option is D.

Answer 2

The correct answer should be D) The frequency of Wave 2 is double the frequency of Wave 1.

This is because the frequency is how many waves there is in an amount of time, so 10 waves in 1 second has double the frequency of 5 waves in 1 second.

Hope that helps!