Assertion : Doping increases the conductivity of semiconductor. Reason : The conductivity of a semiconductor is very low.

Both (A) and (R) are true and (R) is the correct explanation of (A). Both (A) and (R) are true but(R) is NOT the correct explanation of (A). (A) is true but (R) is false. Both (A) and (R) are false.

Both (A) and (R) are true but(R) is NOT the correct explanation of (A).

Doping increases the conductivity of semiconductor as it adds additional electrons or holes to the crystal.