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किसी कक्ष में गति करते हुए इलेक्ट्रॉन का कोणीय संवेग निम्न व्यंजक द्वारा दिया जाता है : `sqrt(l(l+1)).(h)/(2pi)` अतः एक s-इलेक्ट्रॉन का संवेग होगा-
A. `+(1)/(2).(h)/(2pi)`
B. शून्य
C. `(h)/(2pi)`
D. `sqrt(2).(h)/(2pi)`.

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Correct Answer - B
एक s-इलेक्ट्रॉन के लिए, l=0
`:. L=sqrt(l(l+1)).(h)/(2pi)=sqrt(0(0+1)).(h)/(2pi)=0`

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