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11.Dual Nature of Radiation and matter
easy
$5000\,\mathring A$ ની તરંગલંબાઇ ધરાવતા ફોટોનનું વેગમાન કેટલું થાય?
A
$1.3 \times {10^{ - 27}}\;kg-m/sec$
B
$1.3 \times {10^{ - 28}}\;kg-m/sec$
C
$4 \times {10^{29}}\;kg-m/sec$
D
$4 \times {10^{ - 18}}\;kg-m/sec$
Solution
(a) $p = \frac{h}{\lambda }$
$ = \frac{{6.6 \times {{10}^{ – 34}}}}{{(5000 \times {{10}^{ – 10}})}} = 1.3 \times {10^{ – 27}}kg{\rm{ – }}m/s$
Standard 12
Physics
