NEET 2025 Physics question
A thin flat circular disc of radius 4.5 cm is placed gently over the surface of water. If surface tension of water is , then the excess force required to take it away from the surface is :
Answer: (B)
Solution
mN.
A thin flat circular disc of radius 4.5 cm is placed gently over the surface of water. If surface tension of water is , then the excess force required to take it away from the surface is :
mN.