Download Aptitude Crack
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Materials and Components - Engineering

Q1:

Assertion (A): For elemental dielectrics, P = NaeEi where N is number of atoms/m3, P is polarization, ae is electronic polarization and Ei is internal electric field. Reason (R): In elemental dielectrics there are no permanent dipoles or ions.

A Both A and R are true and R is correct explanation of A

B Both A and R are true but R is not correct explanation of A

C A is true but R is false

D A is false but R is true

ANS:A - Both A and R are true and R is correct explanation of A

In elemental dielectrics Pi = Po = 0.