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Question
Position Vector →A is 2^i and position vector →B is 3^j. Here ^i,^j,^k are unit vectors along x, y and z axes as shown in figure. Then −4→A can be represented by
Position Vector →A is 2^i and position vector →B is 3^j. Here ^i,^j,^k are unit vectors along x, y and z axes as shown in figure. Then −4→A can be represented by
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Solution
The correct option is B
→A=2^i
Then,−4→A=−8^i=8(−^i)
Hence, we can say vector −4→A has magnitude of 8 units and it is in the direction of x- axis.
→A=2^i
Then,−4→A=−8^i=8(−^i)
Hence, we can say vector −4→A has magnitude of 8 units and it is in the direction of x- axis.
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