1E=hcλ
150×16×10-19=6.626 × 10-34×3×108λ
λ=6.626 × 10-34×3×108150×16×10-19
λ=82825×10-10 m
8 Answers
1
1@nishant sir: i think λ should be less than the value which has been obtained in the 2nd post because of the work function........
30I'm unsure whether the whole of this energy is manifested in the form of K.E. If it so, then the task of finding the wavelength shouldn't be difficult!
62WHere did work function come from!!!! :O
this is about particle nature and wave nature.
Think about an electron and its energy! why will the electron have enrgy?
and also think of when hc/λ is valid?
1for an electron in an atom....we know that the ratio of the potential enegry and kinetic energy is 2:1....
hence,1/2mv2= 1/3x150=50eV....
we know the mass of an electron....so we can find out the velocity....
hence λ=h/mv....i`m nt sure if the method is correct....pls verify
21Electrons revolving around the nucleus also have energy but do they have wavelength? I am not sure about the answer. So please answer me.
