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प्रश्न
It is easier to hammer a blunt nail into a piece of wood than a sharply pointed nail.
विकल्प
True
False
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उत्तर
False.
It is not easier to hammer a blunt nail into a piece of wood than a sharply pointed nail.
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संबंधित प्रश्न
Toricelli’s barometer used mercury. Pascal duplicated it using French wine of density 984 kg m–3. Determine the height of the wine column for normal atmospheric pressure.
Two vessels have the same base area but different shapes. The first vessel takes twice the volume of water that the second vessel requires to fill up to a particular common height. Is the force exerted by the water on the base of the vessel the same in the two cases? If so, why do the vessels filled with water to that same height give different readings on a weighing scale?
A normal force of 200 N acts on an area of 0.02 m2. Find the pressure in pascal.
Calculate the pressure in pascal exerted by a force of 300 N acting normally on an area of 30 cm2.
An air bubble of radius 0.2 mm is situated just below the water surface. Calculate the gauge pressure. Surface tension of water = 7.2 × 10−2 N/m.
In a pressure cooker, the food is cooked faster because ______.
If the same force is made to act on a larger area, the pressure ______.
Pressure can be increased by decreasing the force.
Pressure is directly proportional to the area of contact.
Assertion: The pressure at the bottom of the sea is lesser than that near the surface.
Reason: The pressure exerted by a liquid depends upon the depth of the liquid and density of the liquid.
