Physics
A student is given three liquids A, B and C of densities ρ1, ρ2 and ρ3. He has to arrange these liquids in order of their increasing densities. To do so, he takes an object and dips it in each liquid and observes that the object floats with 1/9, 2/11 and 3/7 parts of its volume outside the surface of liquid A, B and C respectively. The correct order is :
- ρ1 > ρ2 > ρ3
- ρ2 > ρ3 > ρ1
- ρ3 > ρ2 > ρ1
- ρ3 > ρ1 > ρ2
Related Questions
When a fish has to rise up in water, it diffuses oxygen gas from its blood into the bladder, so its volume …………… and its average density …………… .
- decreases, decreases
- increases, decreases
- decreases, increases
- increases, increases
A ball is made of a material of density ρ, where ρoil < ρ < ρwater with ρoil and ρwater represent the densities of oil and water respectively. The oil and water are immiscible. If the above ball is in equilibrium in a mixture of this oil and water, the figure which represents the equilibrium position is :
- 1.
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- 2.
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- 3.
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- 4.
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Assertion (A) : A body when weighed by a spring balance, weighs slightly less in air than in vacuum.
Reason (R) : This is so because of upthrust of air on body.
- both A and R are true and R is the correct explanation of A
- both A and R are true and R is not the correct explanation of A
- assertion is false but reason is true
- assertion is true but reason is false
Assertion (A) : A bucket filled with water is heavier till it is immersed in water in well.
Reason (R) : The effect of upthrust is that the weight of body immersed in liquid appears to be lighter than its actual weight.
- both A and R are true and R is the correct explanation of A
- both A and R are true and R is not the correct explanation of A
- assertion is false but reason is true
- assertion is true but reason is false