In hydrogen atom, electron makes transition from `n = 4` to `n = 1` level. Recoil momentum of the `H` atom will beA. `3.4 xx 10^(-27)N-sec`B. `6.8 xx 10^(-27)N-sec`C. `3.4 xx 10^(-24)N-sec`D. `6.8 xx 10^(-24)N-sec`

In hydrogen atom, electron makes transition from `n = 4` to `n = 1` le

1.	In hydrogen atom, electron makes transition from `n = 4` to `n = 1` level. Recoil momentum of the `H` atom will beA. `3.4 xx 10^(-27)N-sec`B. `6.8 xx 10^(-27)N-sec`C. `3.4 xx 10^(-24)N-sec`D. `6.8 xx 10^(-24)N-sec`
Answer» Correct Answer - B Recoil momentum `=` momentum of photon `= (h)/(lambda)` `= hR ((1)/(n_(1)^(2)) - (1)/(n_(2)^(2))) = (hR xx 15)/(16) - 6.8 xx 10^(-27) N xx sec`

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In hydrogen atom, electron makes transition from `n = 4` to `n = 1` level. Recoil momentum of the `H` atom will beA. `3.4 xx 10^(-27)N-sec`B. `6.8 xx 10^(-27)N-sec`C. `3.4 xx 10^(-24)N-sec`D. `6.8 xx 10^(-24)N-sec`

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