Light of wavelength 5000,,mathop Alimits | vedclass

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Question

Energy of one photon $=\frac{\mathrm{hc}}{\lambda}=4 	imes 10^{-19}=\mathrm{E}$

$(n)$ $(\mathrm{E})=$ Energy $=10^{-7}$

$(n)$ $\left(4 	imes 1

Vedclass · Accepted Answer

$2.5	imes 10^{11}$

Vedclass · Answer

Energy of one photon $=\frac{\mathrm{hc}}{\lambda}=4 	imes 10^{-19}=\mathrm{E}$

$(n)$ $(\mathrm{E})=$ Energy $=10^{-7}$

$(n)$ $\left(4 	imes 10^{-19}ight)=10^{-7}$

$\mathrm{n}=2.5 	imes 10^{11}$

Light of wavelength $5000\,\,\mathop A\limits^o $ falling on a sensitive surface. If the surface has received $10^{-7}\,J$ of energy, then the number of photons falling on the surface will be

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