Question

The threshold frequency for the ejection of electrons from a
metal is 5.0 × 10 ¹⁴ s⁻¹

Will the photon of radiation having energy 3.0×10⁻¹⁹ J give
photoelectric effect or not?

Answer 1

Answer:

Explanation:

KE=h(v−v  

0

​  

)

Where v= incident frequency,

v  

0

​  

= threshold frequency.

∴v  

0

​  

=v−  

h

KE

​  

=5.2×10  

14

−  

6.626×10  

−34

 

1.3×10  

−19

 

​  

=3.24×10  

14

sec  

−1