7. Which of the following relations is dimensionally incorrect? O (a) y mv2 = mgh O (b) K = m?ve Оооо O (C) W = " mv2 - mu? O (d) T = v(1/9).
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Answer:
In order to compare the dimensions, the constant terms are ignored.
mu
2
=mgh
Substitute the units for both the quantities:
⇒kg(ms
−1
)
2
=kgms
−2
m
Compare the dimensions:
⇒[ML
2
T
−2
]=[ML
2
T
−2
]
Explanation:
hope it's helpful
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