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Units and Measurements — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysicsUnits and Measurements1 Mark
Question
Define one Barn. How it is related with metre?
✓

Answer

One Barn is a small unit of area used to measure area of nuclear cross-section.
$\therefore1\text{ barn}=10^{-28}\text{m}^2$

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