The pressure at 10 {\rm m} below the surface of the ocean is about2.00×105Pa. Which of the following statements istrue?The weight of a column of seawater 1{\rm m}^2 in cross section and 10 {\rm m} high is about 2.00×105\rm N. The weight of a column of seawater 1{\rm m}^2 in cross section and 10 {\rm m} high plus the weight of a column of air with thesame cross section extending up to the top of the atmosphere isabout 2.00×105\rm N. The weight of 1 {\rm m}^3 of seawater at 10 {\rm m} below the surface of the ocean is about2.00×105\rm N. The density of seawater is about2.00×105 times the density of air at sealevel.

Complete Question

The pressure at 10 {\rm m} below the surface of the ocean is about 2.00×105Pa. Which of the following statements is true?

Option 1=>The weight of a column of seawater 1{\rm m}^2 in cross section and 10 {\rm m} high is about 2.00×105\rm N.

Option 2=>The weight of a column of seawater 1{\rm m}^2 in cross section and 10 {\rm m} high plus the weight of a column of air with the same cross section extending up to the top of the atmosphere is about 2.00×105\rm N.

Option 3=>The weight of 1 {\rm m}^3 of seawater at 10 {\rm m} below the surface of the ocean is about 2.00×105\rm N.

Option 4=>The density of seawater is about 2.00×105 times the density of air at sealevel.

The correct option is  2

Explanation:

     From the question we are told that

    The height is  

      The pressure is  

Generally pressure is mathematically represented as

The force (i.e the weight ) on the column of the seawater due to the pressure can be mathematically evaluated as

          fff

Here the  Area is   as stated in the question

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