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Q.

Calculate the mass of a photon with wavelength 3.6 A°.

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a

$6.135 \times 10^{29} Kg$

b

$6.135 \times 10^{- 33} Kg$

c

$6.135 \times 10^{19} Kg$

d

$6.135 \times 10^{16} Kg$

answer is B.

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Detailed Solution

$λ = \frac{h}{mc} m = \frac{h}{λc}$

Putting the given values,

$m = \frac{6.626 \times 10^{- 34}}{3.6 \times 10^{- 10} \times 3.0 \times 10^{8}} = 6.135 \times 10^{- 33} kg$

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