Question

A 60 watt lamb giving out light radiations of wave length500nm will give 1 mole of photones in

Answer 1

Answer:

Explanation:

POWER = ENERGY / TIME   (ENERGY = h c / wavelength)

              = (n h c / wavelength) / time

time =n h c /( wavelength × power)

here n means no.of particles

1 mole = 6.022×10^23 particles

so

time = (6.022 ×10^23 × 6.63×10^-34 × 3×10^8) / (500×10^-9×60)

       = ( 6.022×6.63×3×10^-3) / ( 5 × 6 ×10^-6)

      = 6.022×6.63×10^2

       =39.92586 × 10^2

      =3992.586 seconds