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Class 11 NEET Physics Properties of Matter Questions

Section: Physics

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Question : 4

Total: 90

A thin flat circular disc of radius 4.5‌cm is placed gently over the surface of water. If surface tension of water is 0.07Nm−1, then the excess force required to take it away from the surface is

19.8‌mN
198N
1.98‌mN
99N

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