Question

Give the relation of energy (E) and frequency (v) as given by Planck. Calculate the frequency and energy of a photon of radiation having wavelength 3000°A.
Pls answer correctly,need it urgently...

Answer 1

Solution:-1

$\\ \sf\longmapsto E=hv$

• E denotes to Energy
• h denotes to planks constant
• v denotes to frequency.

Solution:-2

• Wavelength=3000Å

$\boxed{\sf \lambda=\dfrac{c}{v}}$

$\\ \sf\longmapsto v=\dfrac{c}{\lambda}$

$\\ \sf\longmapsto v=\dfrac{3\times 10^8m/s}{3000\times 10^{-10}m}$

$\\ \sf\longmapsto v=0.001\times 10^{18}s^{-1}$

$\\ \sf\longmapsto v=1.0\times 10^{15}s^{-1}$

Now

$\\ \sf\longmapsto E=hv$

$\\ \sf\longmapsto E=6.626\times 10^{-34}Js\times 1.0\times 10^{15}s^{-1}$

$\\ \sf\longmapsto E=6.6\times 10^{-19}J$