0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Question

The work function of a metal is $$W_0$$ and $$\lambda $$ is the wavelength of the incidence light. There will be no photoelectric effect if :

A
$$\lambda =\frac{hc}{W_0}$$
B
$$\lambda <\frac{hc}{W_0}$$
C
$$\lambda >\frac{hc}{W_0}$$
D
$$\lambda \le \frac{hc}{W_0}$$
Solution
Verified by Toppr

Correct option is A. $$\lambda >\frac{hc}{W_0}$$
$$\begin{array}{l}k_{\max }=h v-\phi \\\text { Since there is no photo-electric effect } \\\therefore h v\phi<0 \\\frac{h c}{\lambda_{b}}-w_{0}<0 \\W_{0}>\frac{h c}{\lambda}\Rightarrow\left[\lambda>\frac{h c}{\omega_{0}}\right]\end{array}$$

Was this answer helpful?
0
Similar Questions
Q1
The work function of a metal is $$W_0$$ and $$\lambda $$ is the wavelength of the incidence light. There will be no photoelectric effect if :
View Solution
Q2
The work function of a metal is 3.5×1019 eV. If 5000A wavelength of light is incident on the metal, is there would be any photoelectric effect?
View Solution
Q3
Light of wavelength λ falls on a metal having work function hc/λ0. The photoelectric effect will take place only if:
View Solution
Q4
The photoelectric work function for a metal surface is $$3.84 \times 10^{-19} J$$. If the light of wavelength $$5000 \mathring{A}$$ is incident on the surface of the metal, will there be photoelectric emission?
View Solution
Q5
Light of wavelength λ falls on a metal having work function hcλ0. Photoelectric effect will take place only if
View Solution