(1) Hint: An ideal fluid provides zero resistance to the shear forces.
Step 1: Find the Bulk modulus of the liquid.
As an ideal liquid is not compressible, hence, change in volume,
Bulk modulus B =
Compressibility, K =
Step 2: Find the shear modulus of the liquid.
As there is no tangential (viscous) force exists in the case of an ideal fluid, hence, shear modulus = 0