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A photo has a wavelength of 5000 Å. Cal...

A photo has a wavelength of 5000 Å. Calculate its momentum.

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Given `lambda = 5000` Å , p = ?.
`lambda = h/p`,
`therefore p=h/lambda = (6.625xx10^(-34))/(5000xx10^(-10))=1.325xx10^(-27)"kg ms"^(-1)`.
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