Monochromatic radiation emitted when electron on hydrogen atom jumps from first exited to the grounds state irradiates a photosnesitive material. The stopping potential is measured to be 3.57V. The threshold frequency of the material is :A1.6×1015HzCorrect AnswerB2.5×1015HzYour AnswerC4×1015HzD5×1015Hz
Question
Monochromatic radiation emitted when electron on hydrogen atom jumps from first exited to the grounds state irradiates a photosnesitive material. The stopping potential is measured to be 3.57V. The threshold frequency of the material is :A1.6×1015HzCorrect AnswerB2.5×1015HzYour AnswerC4×1015HzD5×1015Hz
Solution
The question is asking for the threshold frequency of a photosensitive material. This can be calculated using the formula for the photoelectric effect:
E = hf = eV
where: E is the energy of the photon, h is Planck's constant (6.63 x 10^-34 Js), f is the frequency of the photon, e is the charge of an electron (1.6 x 10^-19 C), and V is the stopping potential.
Given that the stopping potential V is 3.57V, we can rearrange the formula to solve for f:
f = eV/h
Substituting the given values:
f = (1.6 x 10^-19 C * 3.57V) / (6.63 x 10^-34 Js)
Solving this will give the threshold frequency of the photosensitive material.
Similar Questions
The electron in the hydrogen atom jumps from excited state (n=3) to its ground state (n=1) and the photons thus emitted irradiate a photosensitive material. If the work function of the material is 5.1eV, the stopping potential is estimated to be
Figure shows the plot of the stopping potentialversus the frequency of the light used in anexperiment on photoelectric effect. The ratio h/e is:
If the frequency of the incident radiation is equal to the threshold frequency, what will be the value of the stopping potential?
28. Which transition in an excited hydrogen atom will emit the longest wavelength of light?1 pointE5 to E1E4 to E1E3 to E1E2 to E1
The threshold frequency for a photosensitive metal is 3.3×104Hz. If light of frequency 8.2×1014Hz is incident on this metal. The cut-off voltage for the photoelectric emission is nearly
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.