Chapter 13 – Fluid Mechanics
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A body floats in water with 40% of its volume outside water. When the same body floats in an oil. 60% of its volume remains outside oil. The relative density of oil is:
17
Sep
A body floats in water with 40% of its volume outside water. When the same body floats in an oil. 60% of its volume remains outside oil. The relative density of oil is: A body floats in water with 40% of its volume outside water. When the same body floats in an oil. 60% of [...]
An object weights m1 in a liquid of density d1 and that in liquid of density d2 is m2. The density d of the object is
17
Sep
An object weights m1 in a liquid of density d1 and that in liquid of density d2 is m2. The density d of the object is An object weights m1 in a liquid of density d1 and that in liquid of density d2 is m2. The density d of the object is September 17, 2020 [...]
A stone of relative density k is released from rest on the surface of a lake. If viscous effects are ignored, the stone sinks in water with an acceleration of
17
Sep
A stone of relative density k is released from rest on the surface of a lake. If viscous effects are ignored, the stone sinks in water with an acceleration of A stone of relative density k is released from rest on the surface of a lake. If viscous effects are ignored the stone sinks in [...]
Mass of solid floating in liquid is m1 and mass of liquid is m2. Base area is A. Then pressure at bottom is p0+(m1+m2)g/A Reason : Upward force on liquid from base of vessel is pA, where p is pressure at bottom.
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Sep
Mass of solid floating in liquid is m1 and mass of liquid is m2. Base area is A. Then pressure at bottom is p0+(m1+m2)g/A Reason : Upward force on liquid from base of vessel is pA, where p is pressure at bottom. Mass of solid floating in liquid is m1 and mass of liquid is [...]
Assertion A solid is floating in a liquid of density p1. when the solid melts its density becomes p2 in liquid state. If p1 > p2 level of liquids will increase after melting. Reason In liquid state volume always increases after a solid melts.
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Sep
Assertion A solid is floating in a liquid of density p1. when the solid melts its density becomes p2 in liquid state. If p1 > p2 level of liquids will increase after melting. Reason In liquid state volume always increases after a solid melts. Upthrust will remain same September 17, 2020 Category: Arihant Physics by [...]
Assertion : A solid is floating in a liquid . If temperature is increased and expansion of solid is ignored, then fraction of volume immersed will increase. Reason : By increasing the temperature density of liquid will decrease.
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Sep
Assertion : A solid is floating in a liquid . If temperature is increased and expansion of solid is ignored, then fraction of volume immersed will increase. Reason : By increasing the temperature density of liquid will decrease. Assertion : A solid is floating in a liquid . If temperature is increased and expansion of [...]
Assertion : If water is filled in a balloon and this is immersed in water itself. Then volume of water displaced is equal to the volume of water filled in the balloon. Reason : Volume of a liquid displaced is equal to the volume of solid immersed in that liquid.
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Sep
Assertion : If water is filled in a balloon and this is immersed in water itself. Then volume of water displaced is equal to the volume of water filled in the balloon. Reason : Volume of a liquid displaced is equal to the volume of solid immersed in that liquid. Assertion : When an ideal [...]
Assertion : A solid object of iron is dipped in water, both are at same temperature of 2∘C. If the temperature of water is increased by 2∘C, then the buoyancy force action of the object will increase. Reason : If we increase the temperature of water from 2∘C to 4∘C, then density of water will increase. Ignore expansion of solid sphere.
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Sep
Assertion : A solid object of iron is dipped in water, both are at same temperature of 2∘C. If the temperature of water is increased by 2∘C, then the buoyancy force action of the object will increase. Reason : If we increase the temperature of water from 2∘C to 4∘C, then density of water will [...]
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Assertion : A solid object of iron is dipped in water ,
both are at same temperature of 2∘C. If the temperature of water is increased by 2∘C ,
then density of water will increase. Ignore expansion of solid sphere. ,
then the buoyancy force action of the object will increase. Reason : If we increase the temperature of water from 2∘C to 4∘C ,
Assertion : In the given figure shown, p1=p2. Reason : Pressure at 1 is less than the atmospheric pressure.
17
Sep
Assertion : In the given figure shown, p1=p2. Reason : Pressure at 1 is less than the atmospheric pressure. Assertion : In the given figure shown p1=p2. Reason : Pressure at 1 is less than the atmospheric pressure. September 17, 2020 Category: Arihant Physics by D.C Pandey , Chapter 13 - Fluid Mechanics , Volume [...]
Assertion : A wooden plank is floating in two liquids as shown. Net force applied by liquid-1 on plank is zero. Reason : Contribution in upthrust due to liquid -1 is V1ρ1g. Where V1 = volume immersed in liquid -1 and ρ1 is the is the density of liquid -1.
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Sep
Assertion : A wooden plank is floating in two liquids as shown. Net force applied by liquid-1 on plank is zero. Reason : Contribution in upthrust due to liquid -1 is V1ρ1g. Where V1 = volume immersed in liquid -1 and ρ1 is the is the density of liquid -1. Assertion : When an ideal [...]