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The point (alpha, beta, gamma) lies on t...

The point `(alpha, beta, gamma)` lies on the plane x+y+z = 2. Let, `vec a = alpha i + beta j +gamma k` and `k xx (k xx vec a) = vec 0` then `gamma =`

A

0

B

1

C

2

D

3

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The correct Answer is:
C
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