[amp_mcq option1=”sink to bottom” option2=”float over fluid” option3=”partly immersed” option4=”be fully immersed with top surface at fluid surface” correct=”option1″]<\/p>\n
The correct answer is A.<\/p>\n
Specific gravity is a dimensionless number that compares the density of a substance to the density of a standard substance. The standard substance is usually water, which has a specific gravity of 1.<\/p>\n
A metal with a specific gravity of 0 will float in a fluid with a specific gravity of a, because the metal is less dense than the fluid. When an object is placed in a fluid, it will experience two forces: gravity and buoyancy. Gravity pulls the object down, while buoyancy pushes the object up. If the object is more dense than the fluid, then gravity will be stronger than buoyancy and the object will sink. If the object is less dense than the fluid, then buoyancy will be stronger than gravity and the object will float.<\/p>\n
In this case, the metal has a specific gravity of 0, which is less than the specific gravity of the fluid (a). Therefore, the metal will float in the fluid.<\/p>\n
Option B is incorrect because the metal will not float over the fluid. The metal will sink to the bottom of the fluid.<\/p>\n
Option C is incorrect because the metal will not be partly immersed. The metal will be fully immersed in the fluid.<\/p>\n
Option D is incorrect because the metal will not be fully immersed with the top surface at the fluid surface. The metal will sink to the bottom of the fluid.<\/p>\n","protected":false},"excerpt":{"rendered":"
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