Question

The pressure P1 at a certain depth in river water and P2 at the same depth in seawater are related as: (a) P1 > P2 (b) P1 = P2 (c) P1 < P2 (d) P1 - P2 = atmospheric pressure

March 16, 2024

Answer

P₁ < P₂

Reason — As the density of sea water is more than the density of river water, hence, the pressure at a certain depth in sea water is more than that at the same depth in river water because pressure increases with the increase in density of liquid.

💡 Some Related Questions

Assuming the density of air to be 1.295 kg m-3, find the fall in barometric height in mm of Hg at a height of 107 m above the sea level. Take density of mercury = 13.6 x 10^3 kg m-3

At sea level, the atmospheric pressure is 1.04 x 10^5 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.

At sea level, the atmospheric pressure is 76 cm of Hg. If air pressure falls by 10 mm of Hg per 120 m of ascent, what is the height of a hill where the barometer reads 70 cm of Hg. State the assumption made by you.

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 x 10^3 kg m-3

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

Draw a simple labelled diagram of a Fortin barometer and state how it is used to measure the atmospheric pressure.

What is an altimeter? State it’s principle. How is it’s scale calibrated ?

Mention two demerits of a simple barometer and state how they are removed in a Fortin barometer.

What is a barometer? How is a simple barometer constructed?

Why does our nose start bleeding on high mountains?