(C) M'L-T°) is the dimensional formulae of density.
Q. 25. Check the correctness of the relation v2 - u2 = 2as, where the
symbols have their usual meanings.
Ans. 2_ 12-29
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3
Explanation:
ANSWER
We have v
2
−u
2
=2as.
Checking the dimensions on both sides, we get
LHS=[LT
−1
]
2
−[LT
−1
]
2
=[L
2
T
−2
]−[L
2
T
−2
]=[L
2
T
−2
]
RHS=[L
1
T
−2
][L]=[L
2
T
2
]
Comparing LHS and RHS, we find LHS = RHS.
Hence, the formula is dimensionally correct.
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Answer:
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