Assertion : If we plot potential versus x-coordinate graph along the x-axis, then field strength is zero where slope of V - x graph is zero.
Reason : If potential is function of x-only then E = -dV/dx
(a) If both Assertion and Reason are true and the Reason is correct explanation f the Assertion.
(b) If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
(c) If Assertion is true, but the Reason is true.
(d) If Assertion is false but the Reason is true.