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1. units,dimensions and measurement — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysics1. units,dimensions and measurement1 Mark
MCQ
The dimensional formula for young's modulus is
  • ✓
    $M{L^{ - 1}}{T^{ - 2}}$
  • B
    ${M^0}L{T^{ - 2}}$
  • C
    $ML{T^{ - 2}}$
  • D
    $M{L^2}{T^{ - 2}}$
✓

Answer

Correct option: A.
$M{L^{ - 1}}{T^{ - 2}}$
a
Young's modulus $Y =\frac{\text { stress }}{\text { strain }}$

Dimension of $Y =\frac{ M L ^{-1} T ^{-2}}{ M ^{0} L ^{0} T ^{0}}$$=\left[ M L ^{-1} T ^{-2}\right]$

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