A ring of inner and outer radii 8 and 9 cm is pulled out of water surface with a force of [ S.T of water (T) = 70 dyne /cm]

A ring of inner and outer radii 8 and 9 cm is pulled out of water surf

1.	A ring of inner and outer radii 8 and 9 cm is pulled out of water surface with a force of [ S.T of water (T) = 70 dyne /cm]
Answer» `2.6 xx 10^(-2) N` `12.6 xx 10^(-2) N` `7.8 xx 10^(-2) N` `3.08 xx 10^(-2) N` Answer :C