Math Chapter Wise Vector, Gradient And Curl English MCQ UPPSC GIC 2021 UPPSC Ashram Paddhati 2021 Q.If ˆ ˆ ˆ r xi yj zk = + + and r | r | = then the value of curl () n r r, is- A0 Bn rn-2/r Cn rn-1/r D(n + 3) rn/r Show answer Correct answer: 0