NEET-XII-Physics

qstns with ansrs year:2022

with Solutions - page 2
  • #21
    As the temperature increases, the electrical resistance :
    (A)decreases for conductors but increases for semiconductors
    (B)increases for both conductors and semiconductors
    (C)decreases for both conductors and semiconductors

    (D)increases for conductors but decreases for semiconductors
    digAnsr:   D
    Ans : For conductors `` \alpha `` is (+)ve
    For semiconductors & Insulators `` \alpha `` is (-)ve