# What is the wavelength of a 1.28 x 10^17 Hz wave?

Question

What is the wavelength of a 1.28 x 10^17 Hz wave?

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1 year 2021-09-01T12:13:28+00:00 1 Answers 18 views 0

It is required to find the wavelength of a $$1.28\times 10^{17}\ Hz$$ wave. A wave moves with a speed of light. Speed of a wave is given in terms of wavelength and frequency. So,
$$v=f\lambda$$
$$\lambda=\dfrac{c}{f}\\\\\lambda=\dfrac{3\times 10^8}{1.28\times 10^{17}}\\\\\lambda=2.34\times 10^{-9}\ m\\\\\text{or}\\\\\lambda=2.34\ nm$$