Threshold wavelength for photoelectric effect of a metal is 6500 Å . work function of metal is appr

English

Gujarati

Hindi

11.Dual Nature of Radiation and matter

easy

The threshold wavelength for photoelectric effect of a metal is $6500 \mathring A$. The work function of the metal is approximately .......... $eV$

A$2 $

B$1 $

C$0.1$

D$3 $

Solution

(a) ${\lambda _0} = \frac{{12375}}{{6500}} = 1.9\;eV \approx 2eV$.

Standard 12

Physics

Share

Similar Questions

Explain particle-wave (dual) nature of matter.

medium

Which one of these is non-divisible

easy

Which of the following statements is not correct?

easy

If the two metals $A$ and $B$ are exposed to radiation of wavelength $350\,nm$. The work functions of metals $A$ and $B$ are $4.8\,eV$ and $2.2\,eV$. Then choose the correct option

medium

(JEE MAIN-2023)

A photo sensitive material is at $9\,m$ to the left of the origin and the source of light is at $7\,m $ to the right of the origin along $x$ -axis. The photosensitive material and the source of light start from rest and move, respectively, with $8 \widehat i \, m / s$ and $4 \widehat i \, m / s$ . The ratio of intensities at $t = 0$ to $t = 3\,s$ as received by the photosensitive material is :-

hard