If h is Planck's constant, find the momentum of a photon of wavelength `0.1Å`.

Explanation

`p = ( h )/( lambda)`
`h = 6.6 xx 10^(-34) Js, lambda = 0.1 Å = 0.1 xx 10^(-10) m `
`p = ( 6.6 xx 10^(-34) )/( 0.1 xx 10^(-10)) kg ms^(-1)`
`= 6.6 xx 10^(-23) kg ms^(-1)`