Consider the following statements related to piezoelectric effect:1. It gives electrical response in terms of voltage change when mechanical stress occurs in some materials.2. It gives mechanical response in terms of dimensional change due to electrical excitation of some materials.Which of the above statements is/are correct?

Consider the following statements related to piezoelectric effect:1. I

1.	Consider the following statements related to piezoelectric effect:1. It gives electrical response in terms of voltage change when mechanical stress occurs in some materials.2. It gives mechanical response in terms of dimensional change due to electrical excitation of some materials.Which of the above statements is/are correct?
A.	1 only
B.	2 only
C.	Neither 1 nor 2
D.	Both 1 and 2
Answer» E.