A number of little droplets of water, each of radius 0.1 mm, coalesce to form a single drop of radius 1 mm. Assume the surface tension of water T=0.07N/m and the mechanical equivalent of heat J=4.2 J/cal. The change in temperature is (answer upto two decimal places)

A number of little droplets of water, each of radius 0.1 mm, coalesce

1.	A number of little droplets of water, each of radius 0.1 mm, coalesce to form a single drop of radius 1 mm. Assume the surface tension of water T=0.07N/m and the mechanical equivalent of heat J=4.2 J/cal. The change in temperature is (answer upto two decimal places)
Answer» A number of little droplets of water, each of radius 0.1 mm, coalesce to form a single drop of radius 1 mm. Assume the surface tension of water $T = 0.07 N / m$ and the mechanical equivalent of heat J $= 4.2 J / c a l$ . The change in temperature is (answer upto two decimal places)