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Question

Consider the following:
(1) 4^i×3^i=0
(2) 4^i3^i=43
Which of the above is/are correct?

A
(1) only
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B
(2) only
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C
Both (1) and (2)
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D
Neither (1) nor (2)
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Solution

The correct option is A (1) only
For (1), cross product of 2 vectors in same direction is 0.
4^i×3^i=0
So, (1) is true.

For(2) , division of vector is not allowed.\
So, 4^i3^i is not possible
Thus, (2) is not true.
Hence, option A is correct.

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