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प्रश्न
Distinguish between density and relative density.
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उत्तर
| Sr. No. | Density | Relative density |
| 1. | It is the ratio of mass to volume. `D = ("Mass")/("Volume") = m/V` |
It is the ratio of the density of a substance to the density of water. |
| 2. | Units are g cm−3 or kg m−3 | It is a pure quantity. It has no units. |
| 3. | Density in kg m−3 = R.D × 1000 | R.D. = Density in g cm−3 `R.D. = ("Density in kg cm"^-3)/1000` |
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संबंधित प्रश्न
Define the term Density of a substance.
Define the term relative density of a substance.
State the laws of liquid pressure.
Complete the following sentence :
Pressure at a point inside the liquid is ...................... To its depth.
In what direction and at what point does the buoyant force on a body due to a liquid act?
A piece of wood if left under water comes to the surface. Explain the reason.
A metal solid cylinder tied to a thread is hanging from the hook of a spring balance. The cylinder is gradually immersed into the water contained in a jar. What changes do you expect in the readings of the spring balance? Explain your answer.
What is the centre of buoyancy? State its position for a floating body with respect to the centre of gravity of the body.
Is pressure a vector quantity?
State whether true or false. If false, correct the statement.
The weight of fluid displaced determines the buoyant force on an object.
