ExamBro
ExamBro
JEE Mains · Maths · STD 12 - 10. vector algebra

माना तीन सदिश \(\overrightarrow{\mathrm{a}}=\hat{\mathrm{i}}+2 \hat{\mathrm{j}}+3 \hat{\mathrm{k}}, \overrightarrow{\mathrm{b}}=\hat{\mathrm{i}}-\hat{\mathrm{j}}+2 \hat{\mathrm{k}}\) तथा \(\overrightarrow{\mathrm{c}}=5 \hat{\mathrm{i}}-3 \hat{\mathrm{j}}+3 \hat{\mathrm{k}}\) है। यदि एक सदिश \(\overrightarrow{\mathrm{r}}\) के लिए \(\overrightarrow{\mathrm{r}} \times \overrightarrow{\mathrm{b}}=\overrightarrow{\mathrm{c}} \times \overrightarrow{\mathrm{b}}\) तथा \(\overrightarrow{\mathrm{r}} \cdot \overrightarrow{\mathrm{a}}=0\) है, तो \(25|\overrightarrow{\mathrm{r}}|^2\) बराबर है

  1. A \(449\)
  2. B \(336\)
  3. C \(339\)
  4. D \(560\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(339\)

Step-by-step Solution

Detailed explanation

\(\overrightarrow{ a }=\hat{ i }+2 \hat{ j }+3 \hat{ k }\) \(\overrightarrow{ b }=\hat{ i }-\hat{ j }+2 \hat{ k }\) \(\overrightarrow{ c }=\hat{5 i }-3 \hat{ j }+3 \hat{ k }\)…
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app