Question

electrical conductivity of a solid is found to have the same value along all directions . what is the nature of the solid? what will happen if we cut this solid with a knife

Answer 1

Answer: a) amorphous solid b) They cut into uneven pieces with rough edges.

Explanation: There are two types of solids:

a) Crystalline solids: They have definite arrangement of atoms i.e. definite crystal lattice. they are anisotropic i.e the properties are different in different directions. They form small pieces with smooth edges on being cut with a knife.

b) Amorphous solids: They do not have definite arrangement of atoms i.e. there is no definite crystal lattice. They are isotropic i.e the properties are same in different directions. They form uneven pieces with rough edges on being cut with a knife.