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Consider two physical quantities A and B related to each other as E = At x – B 2 where E, x and t have dimensions of energy, length and time respectively. The dimension of AB is

1. L –2 M 1 T 0
2. L –2 M –1 T 1
3. L 0 M –1 T 1
4. L 2 M –1 T 1

Correct answer: L 2 M –1 T 1

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