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Question
Physics
An iron needle slowly placed on the surface of water floats because
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Q. An iron needle slowly placed on the surface of water floats because
Mechanical Properties of Fluids
A
It displaces water more than its weight
B
The density of material of needle is less than that of water
C
Of surface tension
D
Of its shape
Solution:
Needle floats due to surface tension of water which balances the weight of needle. In equilibrium $2 F \sin \theta=m g$
