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25 May, 18:57

Gamma-ray bursters emit pulses of gamma rays with high energies. The frequency of the most energetic pulses has been measured at around 3.0 x 1021 Hz. What is the wavelength of these gamma rays?

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  1. 25 May, 18:59
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    Speed = wavelength x frequency

    Gamma rays are a part of the electromagnetic spectrum hence travel at the speed of light in vacuum.

    So,

    3 x 10^8 m/s = wavelength x 3.0 x 10^21 Hz

    Rearranging,

    wavelength = 3 x 10^8 m/s / 3.0 x 10^21 Hz = 1 x 10^-13 m
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