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If debroglie wavelength of moving electron is decreased from 1 to 0.5 then calculate change in ke |
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Answer» Answer: ENERGY=KINETIC energy+work function implies,energy =kinetic energy energy=E=hc/lamda [h=planks constant=6*10^-34 c=velocity of light=3*10^8] CHANGE in energy=change in kinetic energy e1-e2= chnge in kinetic energy (hc)/lambda1-(hc)/lambda2=change in kinetic energy hc[(1/0.5)-(1/1)]=KE KE=6*10^-34*3*10^8[0.5/0.5] KE=18*10^-26 |
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