There is a small hole in a hollow sphere . The water enters in it when it is taken to depth of 40 cm under water. The surface tension of water is 0.07 N/m. The diameter of hole is-

A small hole is made at the bottom of a hollow sphere. The water enters into it when it is taken to a depth of 40 cm under water. If the surface tension of water is 0.07N m^(-1) , diameter of the hole is

A hollow sphere has a small hole in it. On lowering the sphere in a tank of water, it is observed that water enters into the hollow sphere at a depth of 40 cm below the surface. Surface tension of water is 7 xx 10^(-2) N//m . The diameter of the hole is

A hollow sphere has a small hole in it. On lowering the sphere in a tank of water, it is observed that water enters into the hollow sphere at a depth of 40 cm below the surface. Surface tension of water is 7 xx 10^(-2) N//m . The diameter of the hole is

A hollow sphere has a small hole in it. On lowering the sphere in a tank of water, it is observed that water enters into the hollow sphere at a depth of 40 cm below the surface. Surface tension of water is 7 xx 10 ^(-2) N//m . The diameter of the hole is approximately :

A hollow sphere has a small hole in it. On lowering the sphere in a tank of water, it is observed that water enters into the hollow sphere at a depth of 40 cm below the surface. Surface tension of water is 7 xx 10^(-2) N//m . The diameter of the hole is

A hollow sphere which has a small hole in its bottom in water to a depth of 30 cm before any water enters in it. If the surface tension of water is 75 dynes/cm then find the radius of the hole in metres (taking g=10m//s^(2))

Find the excess pressure inside a rain water drop of diameter 0.02 cm. The surface tension of water = 0.072 N. m^-1 .