Q.
The position of a particle is given by r→ = i^+2j^−k^ , linear momentum by P→ = (3i^+4j^−2k^). The angular momentum is perpendicular to
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a
x-axis
b
y-axis
c
z-axis
d
Line at equal angles to all the three axes
answer is A.
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Detailed Solution
L→= r→ ×p^ = i^j^k^12−134−2 = −j^−2k^i.e., the angular momentum is perpendicular to x-axis.
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