The energy required
required to melt 1g of ice is 333j
find the no. of photon recured of frequency
4.67 x 103 H₂ that can melt 2g of ice.
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Energy required to melt 1g ice =33J
. Energy required to melt 10g ice =33×10=330J.
Radiation frequency
(ν)=4.67×10 13 s −1
As we know, the energy of radiation is given by: E=hν
Here, h= Planck's constant =6.62×10 −34 J.s
∴E=6.62×10 −34 ×4.67×10 13
⇒E=3.09×10 −20 J
∴ No. of quanta required = 3.09×10 −20 330 =1.067×10 22
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