Distance between the planes r.n = P1 and r.n = P2 is (A) P1 - P2 (B) |P1 - P2| (C) |P1 - P2|/2 (D) None of these

Question

Distance between the planes r.n = P1 and r.n = P2 is

(A) P1 - P2

(B) |P1 - P2|

(C) |P1 - P2|/2

(D) of these

Answer 1

Answer is (B) |P1 - P2|