Highly selective Backlog Qs for JEE MainChemistryStructure of Atom
Which one of the following corresponds to a photon of highest energy?
Options
- A=300 mm
- Bv=3 10⁴ s ⁻¹
- Cv =30 cm ⁻¹
- D=6.626 10⁻²⁷ J
Correct answer
A. =300 mm
Step-by-step solution
E=h v= h c =h c v ( 1 = v ) where E= energy of photon c= velocity of photon (-light) = wavelength of photon h= plank's constant. For ( a )E=6.63 10⁻³⁴ 3 10⁴ / 300 10⁻⁹E=1.98 10⁻²⁵ J / 300 10⁻⁹ E= 1.98 10⁻² J 300 10⁻⁹ m (a) E=6.6 10⁻¹⁹ J For (b) E=h v=6.63 10⁻³⁴ 3 10⁴(b) E=1.98 10⁻³⁵ J For (c) E=h c v 1 3 E=6.63 10⁻⁴ 3 10^ * 30 10² (c) E=5.96 10^ For (d) d E=6.62 10⁻²⁷ J Hence, highest energy for photon is in (a).