Question

solve it asap plz.... don't respond if you don't know the answer​

Answer 1

Explanation:

Given:

λ = wavelength = 616 nm

frequency of an electro magnetic radiation

f = c / λ

     f = 2.98 * 10⁸ / 616 * 10⁻⁹ 

=  4.837  * 10¹⁴ Hz

energy in one photon or quantum

E = h f

= 6.626 * 10⁻³⁴ * 4.837 * 10¹⁴

         =  3.205 * 10⁻¹⁹ J 

= 2 eV

number of quanta  = energy/energy per quantum

          = 2 J / 3.205 * 10⁻¹⁹

         =  6.239 * 10¹⁸ number of photons or quanta