Why dies a small quantity of air introduced into the top of
the barometer tube depress the level of mercury ?
- 3 Answers
- 3344 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / 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 |
Answer / arun k s
The air introduced into the top of the barometer fills
evenly inside the barometer and excerts its pressure (which
further increases when the mercury colomn compresses the
air). Hence the inside mercury colomn get the assistance of
this air pressure to balance the outside atmospheric
pressure & the mercury level depresses.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / kavita saxena
In a barometer there should be perfect vacuume 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 |
Explain what is the heterogenous?
Does gas have density?
what law yields an equation that is used in determining crystal structure from interference patterns produced by monochromatic x-rays?
A 100W bulb and 60 bulb both rated at 220V are connected in series across 220V supply. If 60W bulb is removed and only 100W bulb remains in the circuit, will illumination increase or decrease?
Explain what is the measure of the force of gravity on an object?
WHY DO FLAME GOES UP IN DIRECTION
What is a Diamond ?
How does the electricity travel ?
Explain interference?
explian construction and working of various dye lasers
Find the physical quantity in units from the equation: (Force*Distance)/(Velocity*Velocity)
Explain the Electric dynamo ?
General Physics 
