Answer:
Option A
Explanation:
By ascent formula, we have surface tension.
T=rhg2×103N/m.
=dhg4×103N/m. ( ∵r=d2 )
⇒△TT=△dd+△hh [ given g is constant]
So ,percentage
=△TT×100=(△dd+△hh)×100
=(0.01×10−21.25×10−2+0.01×10−21.45×10−2)×100=1.5%
∴△TT×100= 1.5%