Advertisements
Advertisements
Question
Why is it not advisable to use a fountain pen while travelling in an aeroplane?
Advertisements
Solution
Fountain pens are built in such a way that the pressure inside them balances the atmospheric pressure at sea level. Since atmospheric pressure decreases with an increase in height above sea level, the pressure inside the pen turns out to be much greater than the air pressure in an aeroplane and the pen starts leaking.
APPEARS IN
RELATED QUESTIONS
Explain the following :
A balloon collapses when air is removed from it.
How will you show that there is vacuum above the surface of mercury in a barometer? What name is given to this vacuum?
How is the barometric height of a simple barometer affected if Its tube is slightly tilted from vertical?
The atmospheric pressure at earth's surface is P1 and inside mine is P2. They are related as :
At a given place, a mercury barometer records a pressure of 0.70 m of Hg. What would be the height of water column if mercury in barometer is replaced by water? Take density of mercury to be = 13.6 × 103 kg m-3.
Why do not we feel uneasy even under enormous pressure of the atmosphere above as?
How is the reading of a barometer affected when it is taken to: A mine
What is an aneroid barometer?
Draw a neat and labeled diagram to explain its construction and working.
Give reasons:
Why artificial pressure creates in Aircraft?
It is much easier to burst an inflated balloon with a needle than by a finger. Explain.
