Which of the following statements is incorrec | vedclass

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(C) Dimensional analysis is a powerful tool for checking the consistency of physical equations. $1$. If an equation is dimensionally incorrect,it must

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$A$ dimensionally incorrect formula may be correct.

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(C) Dimensional analysis is a powerful tool for checking the consistency of physical equations. $1$. If an equation is dimensionally incorrect,it must be physically incorrect because the units on both sides do not match. $2$. If an equation is dimensionally correct,it does not guarantee that the equation is physically correct,as it may lack dimensionless constants or factors. $3$. Therefore,a dimensionally correct formula may be correct or incorrect,but a dimensionally incorrect formula is always incorrect. $4$. Thus,the statement '$A$ dimensionally incorrect formula may be correct' is false.

Which of the following statements is incorrect?

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