Two needles are floating on the surface of water. A hot needle when touches wate `3r` surface between the needles then they move

Why a needle floats on the surface of a liquid?

A needle or a pin floats on the surface of water because of

A needle or a pin floats on the surface of water because of

A solid needle placed horizontally on the surface of the water floats due to

The length of needle floating on the surface of water is 1.5 cm.The force in addition to its weight required to lift the needle from water surface will be (Surface tension of water = 7.5 N//cm)

The length of needle foating on the surface of water is 1.5 cm the force in addition to its weight required to lift the needle from water surface will be (surface tension of water =7.5N//cm )