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11.Dual Nature of Radiation and matter
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$1.5 \times 10^{13}\ Hz$ આવૃત્તિ વાળા ફોટોનનું વેગમાન .......છે.
A
$3.3\times 10^{-29}\ kg\ m/s$
B
$3.3 \times 10^{-34}\ kg\ m/s$
C
$6.6 \times 10^{-34}\ kg\ m/s$
D
$6.6 \times 10^{-30}\ kg\ m/s$
Solution
${f} = \,\,1.5\,\, \times \,\,1{0^{13}}\,\,Hz$
વેગમાન $ = \frac{{\text{h}}}{\lambda } = \frac{h}{{c/{f}}}\,(c = {f}\,\lambda )$
$ = \frac{{6.6 \times {{10}^{ – 34}} \times 1.5 \times {{10}^{13}}}}{{3 \times {{10}^8} \times 10}} = \frac{{1 \times 15 \times 6.6 \times {{10}^{ – 30}}}}{3}\,\, = 3.3 \times {10^{ – 29}}$
Standard 12
Physics
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