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1.Units, Dimensions and Measurement
medium
$M{L^{ - 1}}{T^{ - 2}}$ represents
AStress
BYoung's Modulus
CPressure
DAll the above three quantities
Solution
Here stress $=f / A$
Pressure $=f / A$
So, $[$ stress $]=[$ Pressuue $]=\left[M L^{-1} T^{-2}\right]$
Hiso, $Y=\frac{\text { stress }}{\text { strain }}$ (strain is dimensionliss)
$\therefore Y=f / A=\left[M L^{-1} T^{-2}\right]$
$\therefore$ All the there has seme dimenion equals $\left[ HL ^{-1} T^{-2}\right]$
Pressure $=f / A$
So, $[$ stress $]=[$ Pressuue $]=\left[M L^{-1} T^{-2}\right]$
Hiso, $Y=\frac{\text { stress }}{\text { strain }}$ (strain is dimensionliss)
$\therefore Y=f / A=\left[M L^{-1} T^{-2}\right]$
$\therefore$ All the there has seme dimenion equals $\left[ HL ^{-1} T^{-2}\right]$
Standard 11
Physics
