Consider the following statements
(A) A common model of a solid assumes the atoms executing SHM about mean lattice positions. This model cannot explain thermal expansion of solids.
(B) The average distance over a time period of oscillation between the particles remains constant.


 

• A

  Both (A) and (B) are true.
   

• B

  (A) is true But (B) is false.
   

• C

  (A) is false But (B) is true.
   

• D

  Both (A) and (B) are false.