Question

consider the data of above. on irradiating a metal with light of wavelength Lambda 1 and Lambda 2 the kinetic energy of the ejected electrons are given above .if Lambda 1 is 3 times of the Lambda 2 then the work function of the metal is??
please give explanation ​

Answer 1

Answer:

please refer to the attached photo.

Hope you will be able to understand.

Explanation:

you need to apply photoelectric equations and solve them for 2 varibles

(lamba 1 and lamba 2).