143234
Water is flowing in streamline in a horizontally laid pipe of varying cross-section. At the narrowest part of the pipe,
1 both velocity and pressure are maximum
2 velocity is maximum but pressure is minimum
3 velocity is minimum but pressure is maximum
4 both velocity and pressure are minimum
Explanation:
B Since pipe is horizontal potential energy is equal at all the point. So in the narrowest part of pipe pressure will be minimum because velocity is maximum in the narrowest part.
Mechanical Properties of Fluids
143250
An iron cube floats in a vessel containing mercury at $20^{\circ} \mathrm{C}$. If the temperature is increased by $100^{\circ} \mathrm{C}$, then the cube will float
1 lower
2 higher
3 at same level
4 lower or higher depending on mass of cube
Explanation:
A When the temperature increased then the density will decrease so cube will float lower.
Manipal UGET-2016
Mechanical Properties of Fluids
143263
A piece of ice of floating in a beaker containing water, when ice melts, the temperature falls from $20^{\circ} \mathrm{C}$ to $4^{\circ} \mathrm{C}$ and the level of water:
1 remains same
2 falls
3 rises
4 changes erratically
Explanation:
B The density of water is maximum at $4^{\circ} \mathrm{C}$ and we know density is inversely proportional to the volume therefore volume will be minimum at $4^{\circ} \mathrm{C}$. So, if ice melts and the temperature falls then the level of water will also fall.
Assam CEE-2017
Mechanical Properties of Fluids
143266
A liquid is filled in a flask upto a certain point. When the flask is heated, the level of the liquid
1 immediately starts increasing
2 initially falls and then rises
3 rises abruptly
4 falls abruptly
Explanation:
B Both the liquid and the flask undergoes volume expansion and the flask expands first therefore the level of the liquid initially falls and then rises.
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Mechanical Properties of Fluids
143234
Water is flowing in streamline in a horizontally laid pipe of varying cross-section. At the narrowest part of the pipe,
1 both velocity and pressure are maximum
2 velocity is maximum but pressure is minimum
3 velocity is minimum but pressure is maximum
4 both velocity and pressure are minimum
Explanation:
B Since pipe is horizontal potential energy is equal at all the point. So in the narrowest part of pipe pressure will be minimum because velocity is maximum in the narrowest part.
Mechanical Properties of Fluids
143250
An iron cube floats in a vessel containing mercury at $20^{\circ} \mathrm{C}$. If the temperature is increased by $100^{\circ} \mathrm{C}$, then the cube will float
1 lower
2 higher
3 at same level
4 lower or higher depending on mass of cube
Explanation:
A When the temperature increased then the density will decrease so cube will float lower.
Manipal UGET-2016
Mechanical Properties of Fluids
143263
A piece of ice of floating in a beaker containing water, when ice melts, the temperature falls from $20^{\circ} \mathrm{C}$ to $4^{\circ} \mathrm{C}$ and the level of water:
1 remains same
2 falls
3 rises
4 changes erratically
Explanation:
B The density of water is maximum at $4^{\circ} \mathrm{C}$ and we know density is inversely proportional to the volume therefore volume will be minimum at $4^{\circ} \mathrm{C}$. So, if ice melts and the temperature falls then the level of water will also fall.
Assam CEE-2017
Mechanical Properties of Fluids
143266
A liquid is filled in a flask upto a certain point. When the flask is heated, the level of the liquid
1 immediately starts increasing
2 initially falls and then rises
3 rises abruptly
4 falls abruptly
Explanation:
B Both the liquid and the flask undergoes volume expansion and the flask expands first therefore the level of the liquid initially falls and then rises.
143234
Water is flowing in streamline in a horizontally laid pipe of varying cross-section. At the narrowest part of the pipe,
1 both velocity and pressure are maximum
2 velocity is maximum but pressure is minimum
3 velocity is minimum but pressure is maximum
4 both velocity and pressure are minimum
Explanation:
B Since pipe is horizontal potential energy is equal at all the point. So in the narrowest part of pipe pressure will be minimum because velocity is maximum in the narrowest part.
Mechanical Properties of Fluids
143250
An iron cube floats in a vessel containing mercury at $20^{\circ} \mathrm{C}$. If the temperature is increased by $100^{\circ} \mathrm{C}$, then the cube will float
1 lower
2 higher
3 at same level
4 lower or higher depending on mass of cube
Explanation:
A When the temperature increased then the density will decrease so cube will float lower.
Manipal UGET-2016
Mechanical Properties of Fluids
143263
A piece of ice of floating in a beaker containing water, when ice melts, the temperature falls from $20^{\circ} \mathrm{C}$ to $4^{\circ} \mathrm{C}$ and the level of water:
1 remains same
2 falls
3 rises
4 changes erratically
Explanation:
B The density of water is maximum at $4^{\circ} \mathrm{C}$ and we know density is inversely proportional to the volume therefore volume will be minimum at $4^{\circ} \mathrm{C}$. So, if ice melts and the temperature falls then the level of water will also fall.
Assam CEE-2017
Mechanical Properties of Fluids
143266
A liquid is filled in a flask upto a certain point. When the flask is heated, the level of the liquid
1 immediately starts increasing
2 initially falls and then rises
3 rises abruptly
4 falls abruptly
Explanation:
B Both the liquid and the flask undergoes volume expansion and the flask expands first therefore the level of the liquid initially falls and then rises.
143234
Water is flowing in streamline in a horizontally laid pipe of varying cross-section. At the narrowest part of the pipe,
1 both velocity and pressure are maximum
2 velocity is maximum but pressure is minimum
3 velocity is minimum but pressure is maximum
4 both velocity and pressure are minimum
Explanation:
B Since pipe is horizontal potential energy is equal at all the point. So in the narrowest part of pipe pressure will be minimum because velocity is maximum in the narrowest part.
Mechanical Properties of Fluids
143250
An iron cube floats in a vessel containing mercury at $20^{\circ} \mathrm{C}$. If the temperature is increased by $100^{\circ} \mathrm{C}$, then the cube will float
1 lower
2 higher
3 at same level
4 lower or higher depending on mass of cube
Explanation:
A When the temperature increased then the density will decrease so cube will float lower.
Manipal UGET-2016
Mechanical Properties of Fluids
143263
A piece of ice of floating in a beaker containing water, when ice melts, the temperature falls from $20^{\circ} \mathrm{C}$ to $4^{\circ} \mathrm{C}$ and the level of water:
1 remains same
2 falls
3 rises
4 changes erratically
Explanation:
B The density of water is maximum at $4^{\circ} \mathrm{C}$ and we know density is inversely proportional to the volume therefore volume will be minimum at $4^{\circ} \mathrm{C}$. So, if ice melts and the temperature falls then the level of water will also fall.
Assam CEE-2017
Mechanical Properties of Fluids
143266
A liquid is filled in a flask upto a certain point. When the flask is heated, the level of the liquid
1 immediately starts increasing
2 initially falls and then rises
3 rises abruptly
4 falls abruptly
Explanation:
B Both the liquid and the flask undergoes volume expansion and the flask expands first therefore the level of the liquid initially falls and then rises.