Q: An aluminum sphere is dipped into water. Which of the following is true ?
(a) Buoyancy will be less in water at 0 °C than that in water at 4°C
(b) Buoyancy will be more in water at 0 °C than that in water at 4°C
(c) Buoyancy in water at 0°C will be same as that in water at 4°C
(d) Buoyancy may be more or less in water at 4°C depending on the radius of the sphere
Ans: (a)