Answer:
Option (3)
Explanation:
The elasticity property of rock describes how a rock that is subjected to stress undergoes bending and again comes back to its original position. In nature, most of the rocks are non-elastic as they undergo deformation due to the stress acting on them. So the rocks are not always perfectly elastic.
According to Hooke's law, in case of a comparatively small deformations of an object, the displacement that occurs on the rocks or the deformation size that occurs is directly proportional to the amount of load that undergoes deformation.
Hence, the correct answer is option (3).
An aquifer<span> is an underground layer of </span>water<span>-bearing </span>permeable rock, rock fractures or unconsolidated materials (gravel<span>, </span>sand<span>, or </span>silt<span>) from which </span>groundwater<span> can be extracted using a </span>water well<span>. The study of water flow in aquifers and the characterization of aquifers is called </span>hydrogeology<span>. Related terms include </span>aquitard, which is a bed of low permeability along an aquifer,[1]<span> and </span>aquiclude<span> (or </span>aquifuge<span>), which is a solid, impermeable area underlying or overlying an aquifer. If the impermeable area overlies the aquifer, pressure could cause it to become a confined aquifer.</span>
