KCET2022ChemistryStructure of Atom
If wavelength of photon is 2.2 10⁻¹¹ ~m and h=6.6 10⁻³⁴ ~J ~s , then momentum of photon
Options
- A3.33 10⁻²² ~kg ~ms ⁻¹
- B1.452 10⁻⁴⁴ ~kg ~ms ⁻¹
- C6.89 10⁺⁴³ ~kg ~ms ⁻¹
- D3 10⁻²³ ~kg ~ms ⁻¹
Correct answer
D. 3 10⁻²³ ~kg ~ms ⁻¹
Step-by-step solution
Given, wavelength of photon, =22 10⁻¹¹ ~m Plank constant, h=6.6 10⁻³⁴ Js We know that, = h m c m c= h and m c= momentum aligned Momentum & = 6.6 10⁻³⁴ 2.2 10⁻¹¹ & =3 10⁻²³ ~kg ~ms ⁻¹ aligned