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When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper. The rise of water in the dropper is due to
How does the pressure at a certain depth in sea water differ from that at the same depth in river water? Explain your answer.
A partially inflated balloon is placed inside a bell jar connected to a vacuum pump. On creating vacuum inside the bell jar, balloon gets more inflated. How does the pressure change: increase, decrease or remains same, inside the (a) bell jar, (b) balloon?
Mention two demerits of a simple barometer and state how they are removed in a Fortin barometer .
How is the reading of a barometer affected when it is taken to (i) a mine, and (ii) a hill?
At sea level, the atmospheric pressure is 1.04 x 105 Pa. Assuming g = 10 m s-2 and density of air to be uniform and equal to 1.3 kg m-3, find the height of the atmosphere.
Convert 1 mm of Hg into pascal. Take density of Hg = 13.6 x 103 kg m-3 and g = 9.8 m s-2 .
How does the atmospheric pressure change with altitude?
The highest air pressure at sea level was recorded at ______ Russia.
Why do Scuba divers wear special suits and equipment?
