Q. With regards to the Pressure Gradient force consider the following statements:
Which of the statements given above is/are correct?
A
1 and 2 only
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B
2 only
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C
1 and 3 only
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D
1, 2 and 3
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Solution
The correct option is C 1 and 3 only Explanation:
Statement 1 is correct: Pressure Gradient is a change in pressure measured across a given distance. The pressure gradient results in a net force that is directed from high to low pressure that is called the Pressure Gradient Force (PGF).
Statement 2 is incorrect: Pressure Gradient Force can’t exist without a pressure difference. As when pressure is different in different locations, a difference in pressure exists and when a pressure difference exists, a pressure gradient exists.
Statement 3 is correct: PGF is the driving force for the wind. Due to PGF wind flow from high pressure to low pressure.