Question

plzz plzz koi mere inn dono que ko solve kardo​

Answer 1

Answer:

(ans-1) E=hf=hcλ(energy of a photon) E = h f = h c λ (energy of a photon) , ... When working with small systems, energy in eV is often useful. Note that Planck's constant in these units is h = 4.14 × 10−15 eV · s. Since many wavelengths are stated in nanometers (nm), it is also useful to know that hc = 1240 eV · nm.

Explanation:

sorry I just don't know the second one