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Surface Tension — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsSurface Tension1 Mark
MCQ
$1$ a.m.u. is equivalent to
  • A
    $1.6 \times 10^{-12}$ Joule
  • B
    $1.6 \times 10^{-19}$ Joule
  • ✓
    $1.5 \times 10^{-10}$ Joule
  • D
    $1.5 \times 10^{-19}$ Joule
✓

Answer

Correct option: C.
$1.5 \times 10^{-10}$ Joule
$1 \mathrm{amu}=1.66 \times 10^{-27} \mathrm{~kg}$
$E=mc^2=1.66\times10^{-27}\times\left(3 \times 10^8\right)^2=1.5 \times 10^{-10} \mathrm{~J}$

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