c
(C)  \(\,\lambda \,\, = \,\,5.886 \times {10^{ - 16}}\,m\,\,\,\,\,\,\,\,\,\,c\,\, = \,\,3 \times {10^8}\,m\,\,{s^{ - 1}}\)

\(E\,\, = \,\,nhv\) અથવા \(\frac{{nhc}}{\lambda }\,\,\,\{ \because \,n = 1\} \)

\(\therefore \,\,E\,\, = \,\,\frac{{hc}}{\lambda }\,\) અથવા 

\(\,E\,\, = \,\,\frac{{1 \times 6.6 \times {{10}^{ - 34}}\,J \times 3 \times {{10}^8}\,m{s^{ - 1}}}}{{5.862 \times {{10}^{ - 16}}\,m}}\,\, = \,\,\frac{{6.6 \times 3}}{{5.862}} \times {10^{ - 10}}\,J\,\,\,\, = \,\,3.38 \times {10^{ - 10}}\,J\)