Physical World Units And Measurements Ques 28

28. The dimensional formula of pressure is

[1990]

(a) $[MLT^{-2}]$

(b) $[ML^{-1} T^{2}]$

(c) $[ML^{-1} T^{-2}]$

(d) $[MLT^{2}]$

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Answer:

Correct Answer: 28.(c)

Solution:

  1. (c) Pressure $=$ Force / Area

So dimensional formula

$ =\frac{[MLT^{-2}]}{[L^{2}]}=[ML^{-1} T^{-2}] $