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NEET 2015 Physics and Chemistry Paper

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Question : 12 of 91
 
Marks: +1, -0
A force
→
F
=α
^
i
+3
^
j
+6‌widehat‌k is acting at a point
→
r
=2
^
i
−6
^
j
−12‌widehat‌k. The value of α for which angular momentum about origin is conserved is
[NEET 2015]
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