Visible light travels at a speed 3.0 × 108 of m/s. If red light has a wavelength of 6.5 × 10–7 m, what the frequency of this light?

Wave length and frequency have an inverse relationship versus C, celerity of light:

Frequency = (C m/s) / (Wave length m)

Frequency = 3 x 10⁸ / (6.5 x 10⁻⁷)

Frequency = (3/6.5) x 10¹⁵ = 0.4615 x 10⁻¹⁵ = 4.615 x 10⁻14 second

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priyankatutor priyankatutor · Answer 2 · 2022-02-08T07:18:36+01:00

The frequency of the given red light will be [tex]4.615 \times 10^{-14 }[/tex]. The number of waves that pass a given point in unit time.

What is the frequency of light?

The number of waves that pass a given point in unit time. The frequency can be calculated by dividing the speed of light by wavelength.

[tex]f = \dfrac C\lambda[/tex]

Where,

[tex]f[/tex]- frequency

[tex]C[/tex] - speed of light = [tex]3.0 \times 10^8 {\rm\ m/s}.[/tex]

[tex]\lambda[/tex] - wavelength = [tex]6.5 \times 10^{-7 } {\rm \ m}[/tex]

Put the values in the formula,

[tex]f = \dfrac{3.0 \times 10^8 {\rm\ m/s}}{6.5 \times 10^{-7 } {\rm \ m}}\\\\f = 4.615 \times 10^{-14 }[/tex]

Therefore, the frequency of the given red light will be [tex]4.615 \times 10^{-14 }[/tex].

Learn more about the frequency:

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