Question

the planck's constant, h, are they two of them? one is 6.262x10^-34 and the other 4.14x10^-15? when do i use them?

Answer 1

using the units of measure of the International System of units, or MKS, we have:
\[\Large h = 6.62 \times {10^{ - 34}}Joules \times \sec \]
If we use the CGS system (Centimeters-Grams-Seconds), we have:
\[\Large h = 6.62 \times {10^{ - 27}}erg \times \sec \]

Answer 2

your second h is just in eV

your first one has a typo, see @Michele_Laino's post