NEET2024Physics-Properties of Matter
NEET 2024 Physics Surface Tension MCQ Question
Type: MCQ-numerical-Medium-Class 11
A thin flat circular disc of radius 4.5 cm is placed gently over the surface of water. If surface tension of water is 0.07 Nm⁻¹, then the excess force required to take it away from the surface is:
A
1.98 mN
B
99 N
C
19.8 mN
D
198 N
Correct Answer
Option C
Detailed Explanation
The force due to surface tension is . Substituting the values gives mN.
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