The frequency and energy of a photon with a w | vedclass

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Question

(D) Calculation of frequency:$\lambda = 4000 \ \mathring{A} = 4000 	imes 10^{-10} \ m = 4 	imes 10^{-7} \ m$Since $
u = \frac{c}{\lambda}$$
u = \f

Vedclass · Accepted Answer

$7.5 	imes 10^{14} \ s^{-1}, 4.96 	imes 10^{-19} \ J$

Vedclass · Answer

(D) Calculation of frequency:$\lambda = 4000 \ \mathring{A} = 4000 	imes 10^{-10} \ m = 4 	imes 10^{-7} \ m$Since $
u = \frac{c}{\lambda}$$
u = \frac{3 	imes 10^8 \ m/s}{4 	imes 10^{-7} \ m} = 0.75 	imes 10^{15} \ s^{-1} = 7.5 	imes 10^{14} \ s^{-1}$Calculation of energy:$E = h
u = 6.626 	imes 10^{-34} \ J \cdot s 	imes 7.5 	imes 10^{14} \ s^{-1} = 4.96 	imes 10^{-19} \ J$

The frequency and energy of a photon with a wavelength of $4000 \ \mathring{A}$ are respectively.......

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