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A photon of wavelength 6.0 x 10\(^{-7}\) m behaves like a particle of a certain...

Physics
JAMB 2007

A photon of wavelength 6.0 x 10\(^{-7}\) m behaves like a particle of a certain mass. The value of that mass is [h = 6.63 x 10\(^{-34}\) Js, c = 3.0 x 10\(^8\) ms\(^{-1}\)]

  • A. 3.5 x 10\(^{-36}\)kg
  • B. 2.2 x 10\(^{-35}\)kg
  • C. 1.1 x 10\(^{-35}\)kg
  • D. 2.2 x 10\(^{-7}\) kg
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Correct Answer: Option A
Explanation

\(\lambda\) = \(\frac{h}{mv}\), then, h = mv\(\lambda\)

m = \(\frac{h}{v \lambda}\) = \(\frac{6.63 \times 10^{-34}}{6.0 \times 10^{-7} \times 3 \times 10^8}\) = 3.68 x 10\(^{-36}\) kg

OPtion A is the closest.

There is an explanation video available below.


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Explanation Video

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