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Calculate the de-Brogle wavelength of an electron whose kinetic energy is same as `60 Ke V` X-raysA. `0.05 m`B. `0.05 Å`C. `0.5 Å`D. `2 Å` |
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Answer» Correct Answer - B `KE_(e ) = 60 KeV` `KE_(e ) = 60 xx 10^(3)` eVolt `= q Delta V` (for electron, q = e) `Delta V = 60 xx 10^(3)` Volt `lambda_(e ) = sqrt((150)/(60 xx 10^(3))) Å = sqrt((1)/(400)) Å = (1)/(20) Å = 0.05 Å` |
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