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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? 2. 2 × 10–15 HZ 2. 0 × 102 HZ 3. 0 × 108 HZ 4. 6 × 1014 HZ.

Sagot :

Frequency is the number of times an event occurs. The frequency of the red light is 4.1653 x 10⁻¹⁴ Hz.

What is the frequency?

Frequency can be defined as the number of times a repeating event occurs.

Given to us

Speed of light, c =  3. 0 × 10⁸ of m/s.

The wavelength of the red light, λ = 6.5 x 10 ⁻⁷ m

We know that frequency of light can be written as,

[tex]f = \dfrac{c}{\lambda}[/tex]

[tex]f = \dfrac{3.0 \times 10^8 }{6.5 \times 10^{-7}}\\\\f = 4.6153 \times 10^{-14}\ Hz[/tex]

Hence, the frequency of the red light is 4.1653 x 10⁻¹⁴ Hz.

Learn more about Frequency:

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