|
Why is it easier to spray water in which soap is dissolved?
|
|
0
|
2540
|
August 20, 2016
|
|
What is the effect of temperature on surface tension?
|
|
0
|
939
|
August 20, 2016
|
|
When wax is rubbed cloth, the cloth becomes water proof. Why?
|
|
0
|
1586
|
August 20, 2016
|
|
A manometer reads the pressure of a gas in an enclosure as shown in figure
|
|
1
|
3719
|
August 20, 2016
|
|
State and prove Pascal's law and give its experimental proof also
|
|
0
|
42224
|
August 20, 2016
|
|
The blood pressure in human is greater at the feet than at the brain. Why?
|
|
1
|
1428
|
August 20, 2016
|
|
Explain why water can be poured into a bottle with a narrow neck with the aid of glass tube?
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|
0
|
2355
|
August 20, 2016
|
|
Water is depressed in a glass tube whose inner surface is coated with Paraffin wax. Why?
|
|
0
|
2970
|
August 20, 2016
|
|
A razor blade can be made to float on water. What forces act on this blade ? Is Archimede's principle applicable?
|
|
0
|
2330
|
August 20, 2016
|
|
What is column pressure ? Derive a relation for the same
|
|
0
|
5141
|
August 20, 2016
|
|
State Pascal's law of transmission of fluid pressure. Explain how is Pascal's law applied in a hydraulic lift (with suitable diagram)
|
|
0
|
7937
|
August 20, 2016
|
|
During blood transfusion the needle is inserted in a vein where the gauge pressure is 2000 Pa
|
|
1
|
2855
|
August 20, 2016
|
|
Two vessels have the same base area but different shapes
|
|
1
|
1780
|
August 20, 2016
|
|
A tank with a square base of area 1.0 m2 is divided by a vertical partition in the middle
|
|
1
|
2677
|
August 20, 2016
|
|
What is the excess pressure inside a bubble of soap solution of radius
|
|
1
|
4318
|
August 20, 2016
|
|
In the problem, if 15.0 cm of water and spirit each are further poured into the respective arms of the tube, what is the difference in the levels of mercury in the two arms ? (Gravity of mercury = 13.6.)
|
|
0
|
2545
|
August 20, 2016
|
|
A U-tube contains water and methylated spirit separated by mercury. The mercury columns in the two arms are in level with 10.0 cm of water In one arm and 12.5 cm of spirit in the other. What is specific gravity of spirit?
|
|
0
|
2521
|
August 20, 2016
|
|
A hydraulic automobile lift is designed to lift cars with a maximum mass of 3000 kg. The area of cross-section of the piston carrying the load is 425 cm2. What maximum pressure would the smaller piston have to bear?
|
|
0
|
4168
|
August 20, 2016
|
|
Torricell's barometer used mercury. Pascal duplicated it using French wine of density 984 kg m . Determine the height of the line column for normal atmospheric pressure
|
|
0
|
1940
|
August 20, 2016
|
|
A 50 kg of girl wearing high heel shoes balances on a single heel. The heel is circular with a diameter 1.0 cm. What is the pressure exerted by the heel on the horizontal floor?
|
|
0
|
4706
|
August 20, 2016
|
|
The density of the atmosphere at sea level is 1.29 kg m-3. Assume that it does not change with altitude. Then how high would the atmosphere extend?
|
|
0
|
7973
|
August 20, 2016
|
|
What is the pressure on a swimmer 10 m below the surface of a lake?
|
|
0
|
9636
|
August 20, 2016
|
|
The excess pressure inside a soap bubble is thrice the excess pressure inside a second soap bubble. What is the ratio of volume?
|
|
0
|
3781
|
August 20, 2016
|
|
Explain why it is difficult to make mercury enter a fine thermometer tube?
|
|
0
|
1536
|
August 20, 2016
|
|
A man is sitting in a boat which is floating in a pond. If the man drinks some water from the pond, what will happen to the level of water in the pond?
|
|
0
|
7235
|
August 20, 2016
|
|
A barometer kept in an elevator accelerating upwards reads 76 cm. What will be the possible air pressure in the elevator?
|
|
0
|
6146
|
August 20, 2016
|
|
A barometer kept in an elevator accelerating downward read 76 cm. What will be the possible air pressure in the elevator?
|
|
0
|
1878
|
August 20, 2016
|
|
If a small ping-pong ball is placed in a vertical jet of water or air, it will rise to a certain height above the nozzle and stay at that level. Explain
|
|
0
|
3066
|
August 20, 2016
|
|
How does the burner of a gas work?
|
|
0
|
803
|
August 20, 2016
|
|
How does an atomiser work?
|
|
0
|
2574
|
August 20, 2016
|