Q 1 :    

If average depth of an ocean is 4000m and the bulk modulus of water is $2\times {10}^9$ $N{m}^{-2}$, then fractional compression $\frac{∆V}{V}$ of water at the bottom of ocean is $\alpha \times {10}^{-2}$. The value of $\alpha$ is ______ .$(Given, g=10m{s}^{-2},\rho =1000kg$ $m^{-3})$                      [2024]

Q 2 :    

The depth below the surface of sea to which a rubber ball be taken so as to decrease its volume by 0.02% is ______ m.    

$(Take density of sea water={10}^{3}kg{m}^{-3},Bulk modulus of rubber=9\times {10}^{8}N{m}^{-2},and g=10m{s}^{-2})$                      [2024]

Q 3 :    

Match List-I with List-II

	List - I		List - II
A	A force that restores an elastic body of unit area to its original state	(I)	Bulk modulus
B	Two equal and opposite forces parallel to opposite faces	(II)	Young’s modulus
C	Forces perpendicular everywhere to the surface per unit area same everywhere	(III)	Stress
D	Two equal and opposite forces perpendicular to opposite faces	(IV)	Shear modulus

 

Choose the correct answer from the options given below:                      [2024]

• (A)-(III), (B)-(IV), (C)-(I), (D)-(II)

   

• (A)-(II), (B)-(IV), (C)-(I), (D)-(III)

   

• (A)-(IV), (B)-(II), (C)-(III), (D)-(I)

   

• (A)-(III), (B)-(I), (C)-(II), (D)-(IV)