Why dies a small quantity of air introduced into the top of
the barometer tube depress the level of mercury ?
Answer Posted / sanju
In a barometer there should be perfect vacuum above the
mercury level at the to of the glass tube. If air is
introduced into it, it will exert a downward pressure and
the mercury level will fall
Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
Which particles/ rays do radioactive substances emit?
What is a thermal transformation?
what are the Newtons principles? what is mean by gravitational force? what is mean by space technology? what is the use in space technology?
How is the index of refraction computed?
Explain how much does automotive oil weigh?
Explain what is the ray of light?
On an electric schematic, what does the symbol of a horizontal line interrupted by a saw tooth shaped line represent?
how the tube light glows even if the starter is removed
what is meant patch cards..
how many neutrons and how many protons are present in a single deuterium nucleus?
What is balanced field takeoff?
What is melody?
Explain one advantage of a scanning electron microscope over a transmission electron microscope?
Explain what instrument is used to measure volume?
What is different between secondary electron image and back scattered electron image?