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

ધારો કે \(\overrightarrow{ c }\) એ સદિશો \(\overrightarrow{ a }=\hat{ i }+\hat{ j }-\hat{ k }\) અને \(\overrightarrow{ b }=\hat{ i }+2 \hat{ j }+\hat{ k }\) ને લંબ સદિશ છે.  જો \(\overrightarrow{ c } \cdot(\hat{ i }+\hat{ j }+3 \hat{ k })=8\) હોય, તો \(\overrightarrow{ c } \cdot(\overrightarrow{ a } \times \overrightarrow{ b })\)નું મૂલ્ય ..... છે.

  1. A \(24\)
  2. B \(28\)
  3. C \(36\)
  4. D \(39\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(28\)

Step-by-step Solution

Detailed explanation

\(\overrightarrow{ c }=\lambda(\overrightarrow{ a } \times \overrightarrow{ b })\) \(\overrightarrow{ a } \times \overrightarrow{ b }=\left|\begin{array}{ccc}\hat{ i } & \hat{ j } & \hat{ k } \\ 1 & 1 & -1 \\ 1 & 2 & 1\end{array}\right|\)…
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app