Question

3.
At what depth below the surface of water will pressure
be equal to twice the atmospheric pressure ? The
atmospheric pressure is 10 Ncm-2 density of water is
10 kg m -3 and g =9.8 ms-2. ​

Answer 1

Explanation:

Pressure with Height: pressure decreases with increasing altitude. The pressure at any level in the atmosphere may be interpreted as the total weight of the air above a unit area at any elevation. At higher elevations, there are fewer air molecules above a given surface than a similar surface at lower levels.

So, as we go up at higher altitude the pressure decreases.