Calculate the energy of a photon having wavel | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The energy of a photon is given by the formula $E = \frac{hc}{\lambda}$.Using the shortcut formula $E(	ext{eV}) = \frac{12400}{\lambda(\mathring{

Vedclass · Accepted Answer

$19.84 	imes 10^{-19} \, 	ext{J}$

Vedclass · Answer

(C) The energy of a photon is given by the formula $E = \frac{hc}{\lambda}$.Using the shortcut formula $E(	ext{eV}) = \frac{12400}{\lambda(\mathring{A})}$,we get:$E = \frac{12400}{1000} \, 	ext{eV} = 12.4 \, 	ext{eV}$.To convert this energy into Joules,we multiply by the charge of an electron $(1.6 	imes 10^{-19} \, 	ext{C})$:$E = 12.4 	imes 1.6 	imes 10^{-19} \, 	ext{J}$.$E = 19.84 	imes 10^{-19} \, 	ext{J}$.

Calculate the energy of a photon having wavelength $\lambda = 1000 \, \mathring{A}$ in Joules.

Similar Questions

The rest mass energy of an electron is $0.54 \, MeV$. If the velocity of the electron is $0.8 \, c$,then the kinetic energy $(K.E.)$ of the electron is .......... $MeV$.

If the wavelength of a photon is $4000 \text{ Å}$,then its energy will be

The momentum of a photon having energy $hv$ is ............

Which of the following has a mass closest in value to that of the positron? $(1\;a.m.u = 931\;MeV)$

The number of photons emitted from a photocell by a source placed at a distance of $0.5 \ m$ is how many times the number of photons emitted by the same source placed at a distance of $1 \ m$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module