Electron spin

The quantum no.s +1/2 and -1/2 for the electron spin represent
A)rotation ofthe electron in clockwise and anticlockwise direction respectively
B)rotation of the electron in anticlockwise and clockwise derection respectively.
C)magnetic moment of the electron pointing up and down respectively.
D)Two quantum mechanical spin states which have no classical analogue

i think it is between a and d
although i could'nt understand option d
well is it a

answer is D

it is just a convention followed
if you assign s=+1/2 to an electron,electrons having parallel spins will be assigned the same quantum no.,and opp spin will be assigned s=-1/3

Spoiler:

C

i hav seen this quesn earlier

and ans is D
[spoiler]but C doesnt seems wrong[/ spoiler]

ANSWER IS D...........
IT IS A CONCEPTUAL QUESTION................


i dont think dat 'a' or 'b' can be an answer at all..........
samuel glasstne says electron does not rotate

ans is d according to me.........

same here
ans is d

i also thought that.but it gave me minus 1 in the mock.that is why wrote this ques over here.
sir,said its C.rather scolded me for asking that.please explain why u think that d is the answer.i'll match to mine.
Chow.
Thanks a lot for posting replies.

hey sakuro u live in kolkata

nopes,
@rt
I m near to ISRO
now, u got the place. Science city,whereIAC took place,
well i've been to many places but not W.B.

And u r from?

he is from Lucknow

so what
hey which branch of isro
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