Green light has a wavelength of about 510 nm and travels at a speed of 3.00 × 108 m/s.

The frequency of green light, rounded to the nearest tenth and written in scientific notation, is what?

1 answer

To find the frequency of green light, we can use the equation that relates the speed of light (\(c\)), frequency (\(f\)), and wavelength (\(\lambda\)):

\[ c = f \cdot \lambda \]

Where:

  • \(c\) is the speed of light (3.00 × 10^8 m/s),
  • \(f\) is the frequency (in Hz),
  • \(\lambda\) is the wavelength (in meters).

Given that the wavelength of green light is 510 nm, we first need to convert this wavelength into meters:

\[ 510 , \text{nm} = 510 \times 10^{-9} , \text{m} \]

Now we can rearrange the equation to solve for frequency:

\[ f = \frac{c}{\lambda} \]

Substituting the values:

\[ f = \frac{3.00 \times 10^8 , \text{m/s}}{510 \times 10^{-9} , \text{m}} \]

Calculating this gives:

\[ f = \frac{3.00 \times 10^8}{510 \times 10^{-9}} \approx \frac{3.00 \times 10^8}{5.10 \times 10^{-7}} \approx 5.88 \times 10^{14} , \text{Hz} \]

When rounded to the nearest tenth and expressed in scientific notation, the frequency of green light is:

\[ f \approx 5.9 \times 10^{14} , \text{Hz} \]