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Physics
A particle is moving in the x-y plane with a constant velocity along a line parallel to the x-axis, away from the origin. The magnitude of its angular momentum about the origin. (a) is zero (b) remains constant (c) goes on increasing (d) goes on decreasing.
Chemistry
Multiple- Choice Question Which of the following elements has zero electron affinity? (A) fluorine (B) Nitrogen (C) Neon (D) Oxygen
Mathematics
If the vectors a, b and c form the side BC, CA and AB respectively of a triangle ABC , then (a) a . b + b .c + c .a = 0 (b) a x b = b x c = c x a (c) a. b = b .c = c.a (d) a x b + b x c + c x a = 0

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