The frequency of a photon having energy 100 | vedclass

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

Question

(B) The energy of a photon is given by the formula $E = h
u$,where $E$ is the energy,$h$ is Planck's constant,and $
u$ is the frequency.First,conver

Vedclass · Accepted Answer

$2.42 	imes 10^{16} \ Hz$

Vedclass · Answer

(B) The energy of a photon is given by the formula $E = h
u$,where $E$ is the energy,$h$ is Planck's constant,and $
u$ is the frequency.First,convert the energy from electron-volts $(eV)$ to Joules $(J)$:$E = 100 \ eV = 100 	imes 1.6 	imes 10^{-19} \ J = 1.6 	imes 10^{-17} \ J$.Now,substitute the values into the formula:$1.6 	imes 10^{-17} = 6.6 	imes 10^{-34} 	imes 
u$.Solving for $
u$:$
u = \frac{1.6 	imes 10^{-17}}{6.6 	imes 10^{-34}} \approx 0.2424 	imes 10^{17} \ Hz = 2.42 	imes 10^{16} \ Hz$.Thus,the correct option is $B$.

The frequency of a photon having energy $100 \ eV$ is $(h = 6.6 \times 10^{-34} \ J \cdot s)$.

Similar Questions

$A$ sensor is exposed for time $t$ to a lamp of power $P$ placed at a distance $l$. The sensor has a circular opening that is $4d$ in diameter. Assuming all energy of the lamp is given off as light,the number of photons entering the sensor if the wavelength of light is $\lambda$ is (given $l >> d$):

There are materials which absorb photons of shorter wavelength and emit photons of longer wavelength. Can there be stable substances which absorb photons of larger wavelength and emit light of shorter wavelength?

The energy of a photon of visible light with the maximum wavelength in $eV$ is approximately .......

Monochromatic light of frequency $6 \times 10^{14} \,Hz$ is produced by a laser. The power emitted is $2 \times 10^{-3} \,W$. The energy of the photon in this light beam is . . . . . . eV.

If the momentum of a photon is $p$,then its frequency is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module