Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Vector Algebra question

2024 · 27 Jan · Shift 1 · Q48
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Mathematics
  4. /Vector Algebra
  5. /2024 · 27 Jan · Shift 1 · Q48

Vector Algebra question

2024 · 27 Jan · Shift 1 · Q48

JEE MainMathematicsVector AlgebraMCQ+4 / −1
Let a→=i^+2j^+k^,b→=3(i^−j^+k^)\overrightarrow{\mathrm{a}}=\hat{i}+2 \hat{j}+\hat{k}, \overrightarrow{\mathrm{b}}=3(\hat{i}-\hat{j}+\hat{k})a=i^+2j^​+k^,b=3(i^−j^​+k^). Let c→\overrightarrow{\mathrm{c}}c be the vector such that a→×c→=b→\overrightarrow{\mathrm{a}} \times \overrightarrow{\mathrm{c}}=\overrightarrow{\mathrm{b}}a×c=b and a⃗⋅c⃗=3\vec{a} \cdot \vec{c}=3a⋅c=3. Then a⃗⋅((c⃗×b⃗)−b⃗−c⃗)\vec{a} \cdot((\vec{c} \times \vec{b})-\vec{b}-\vec{c})a⋅((c×b)−b−c) is equal to :
  1. A
    32
  2. B
    36
  3. C
    24
  4. D
    20
PreviousNext

More from Vector Algebra

  • The least positive integral value of α, for which the angle between the vectors αi^−2j^​+2k^ and αi^+2αj^​−2k^ is acute, is ​.2024 · Numerical
  • Let the position vectors of the vertices A,B and C of a triangle be 2i^+2j^​+k^,i^+2j^​+2k^ and 2i^+j^​+2k^ respectively. Let l1​,l2​ and l3​ be…2024 · MCQ
  • The position vectors of the vertices A,B and C of a triangle are 2i^−3j^​+3k^,2i^+2j^​+3k^ and −i^+j^​+3k^ respectively. Let l denotes the length of…2024 · MCQ
  • Let a,b and c be three non-zero vectors such that b and c are non-collinear. If a+5b is collinear with c,b+6c is collinear with a and a+αb+βc=0…2024 · MCQ
  • Let a unit vector u^=xi^+yj^​+zk^ make angles 2π​,3π​ and 32π​ with the vectors 2​1​i^+2​1​k^,2​1​j^​+2​1​k^…2024 · MCQ
  • Let OA=a,OB=12a+4b and OC=b, where O is the origin. If S is the parallelogram with adjacent sides OA and OC, then areaofSareaofthequadrilateralOABC​…2024 · MCQ
  • Let a=a1​i^+a2​j^​+a3​k^ and b=b1​i^+b2​j^​+b3​k^ be two vectors such that ∣a∣=1,a⋅b=2…2024 · MCQ
  • Let a=i^+αj^​+βk^,α,β∈R. Let a vector b be such that the angle between a and b is 4π​ and ∣b∣2=6. If $\vec{a} \cdot \vec{b}=3…2024 · MCQ