calculate de broglie's wawelength for an electron travelling at one % the speed of light
calculate frequency of a radiation whose wawelength is 4000 angstroms
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De Broglie's Wave length λ = h / p, where p = the momentum of the electron
λ = 6.626 * 10⁻³⁴ J . s / (9.109 * 10⁻³¹ kg * 3 * 10⁶ m/s)
= 2.425 * 10⁻⁹ meters
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frequency = speed of light / wavelength = 3 * 10⁸ m/s / 4000 * 10⁻¹° m
= 7.50 * 10¹³ Hertz
λ = 6.626 * 10⁻³⁴ J . s / (9.109 * 10⁻³¹ kg * 3 * 10⁶ m/s)
= 2.425 * 10⁻⁹ meters
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frequency = speed of light / wavelength = 3 * 10⁸ m/s / 4000 * 10⁻¹° m
= 7.50 * 10¹³ Hertz
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