Photoelectrons are observed when a metal is illuminated by light with a wavelength less than 383 nm. what is the metal's work function?

Work function of the metal is 3.24 eV.                                    

Explanation:

It is given that,

Wavelength,

Let W is the work function of the metal. It is given by using Einstein's photoelectric effect equation. It is given by :

Since,

So, W = 3.24 eV

So, the work function of the metal is 3.24 eV. Hence, this is the required solution.

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg