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If the wavelength of orange light is [tex]6 \cdot 10^{-7} \, \text{m}[/tex], calculate its frequency.

[tex]f = \quad \text{Hz}[/tex]

A. [tex]5 \times 10^{16}[/tex]
B. [tex]2 \times 10^{-15}[/tex]
C. [tex]5 \times 10^{-46}[/tex]
D. 180

Answer :

To find the frequency of orange light with a given wavelength, you can use the formula that relates the speed of light to frequency and wavelength. The formula is:

[tex]\[
\text{speed of light} = \text{frequency} \times \text{wavelength}
\][/tex]

Rearranging this formula to solve for frequency gives:

[tex]\[
\text{frequency} = \frac{\text{speed of light}}{\text{wavelength}}
\][/tex]

Given:
- The speed of light, [tex]\( c \)[/tex], is approximately [tex]\( 3 \times 10^8 \)[/tex] meters per second.
- The wavelength of the orange light is [tex]\( 6 \times 10^{-7} \)[/tex] meters.

Substitute these values into the formula:

[tex]\[
\text{frequency} = \frac{3 \times 10^8 \, \text{m/s}}{6 \times 10^{-7} \, \text{m}}
\][/tex]

Carrying out the division:

[tex]\[
\text{frequency} = 5 \times 10^{14} \, \text{Hz}
\][/tex]

Therefore, the frequency of orange light is [tex]\( 5 \times 10^{14} \, \text{Hz} \)[/tex].

From the given choices, [tex]\( 5 \times 10^{16} \)[/tex], [tex]\( 2 \times 10^{-15} \)[/tex], [tex]\( 5 \times 10^{-46} \)[/tex], and 180, the correct answer is not listed, so it seems there was a mistake in the options. The correct frequency based on calculations should be [tex]\( 5 \times 10^{14} \, \text{Hz} \)[/tex].

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