Following results are observed when sodium metal is irradiated with different wavelengths. Calculate (a) threshold wavelength and (b) Planck's constant. Wavelengths (nm) 500 450 400 () 2.55 4.35 5.35

Following results are observed when sodium metal is irradiated with di

1.	Following results are observed when sodium metal is irradiated with different wavelengths. Calculate (a) threshold wavelength and (b) Planck's constant. Wavelengths (nm) 500 450 400 () 2.55 4.35 5.35
Answer» US SUPPOSE threshold WAVELENGTH to be The kinetic energy of the radiation is given asOrSimilarly,Dividing equation (3) by equation (1)Threshold wavelength Substituting this VALUE in equation (3), we get