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# A charged particle is projected in a magnetic field →B=(3→i+4→j)×10−2T and the acceleration is found to be →a=(x→i+2→j)m/s2. The value of x is :-8/3 m/s28/3 m/s2-4/3 m/s24/3 m/s2

A
-8/3 m/s2
B
4/3 m/s2
C
8/3 m/s2
D
-4/3 m/s2
Solution
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