find energy of each of the photons which
(i) correspond to light of frequency `3xx 10^(15) Hz`.
(ii) have wavelength of 0.50 A.

Explanation

(i) `E=hv=6.626 xx 10^(-34) xx 3 xx 10^(15)=1.988 xx 10^(-18)J`
(ii) `lambda=0.50 A=0.50 xx 10^(-10)m`
`E=(hc)/(lambda)=(6.626 xx 10^(-34) xx 3 xx 10^(8))/(0.50 xx 10^(-10))`
`=3.98 xx 10^(-15)J`