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 Form 1 Physics Questions and Answers on Pressure

Describe a simple experiment to demonstrate that the pressure in a liquid increases with depth.

 (1m 20s)
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Answer Text:
• Using a nail, make three holes, A, B and C, of the same diameter along a vertical line on one side of a tin.
• Fill the tin with water as shown in the figure.
• With the tin full of water, observe the jets of water from the holes A, B and C.
The lower hole, A, throws water the farthest distance z, followed by B distance y and lastly C distance x.
Pressure of water at A is greater than pressure at B and pressure at B is greater than at C. Hence, pressure increases with depth.