# Light Wave Properties and Frequencies

## What is the speed of light?

The speed of light is 3.0 × 10^8 meters/second.

## What is the wavelength of a light wave?

The wavelength of the light wave is 7.0 × 10^-7 meters.

## What is the frequency of the light wave?

Choose the correct answer: A. 2.5 × 10^-14 hertz B. 4.3 × 10^14 hertz C. 1.7 × 10^-14 hertz D. 5.1 × 10^-14 hertz

## Answer:

The correct answer is B. 4.3 × 10^14 hertz.

Light waves exhibit different properties including speed, wavelength, and frequency. The speed of light is a constant value of 3.0 × 10^8 meters/second in a vacuum.

Wavelength, denoted by the symbol λ, represents the distance between two consecutive peaks or troughs of a wave. In this case, the wavelength of the light wave is 7.0 × 10^-7 meters.

To calculate the frequency of the light wave, we can use the formula: f = c/λ where f is the frequency, c is the speed of light, and λ is the wavelength.

Substituting the values, we get: f = 3.0 × 10^8 / 7.0 × 10^-7 f = 4.29 × 10^14 Hz

Therefore, the frequency of the light wave is approximately 4.3 × 10^14 hertz, which corresponds to option B.