Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • Can someone help me with this, In the cube of side 'a' shown in the figure , the vector from the central point of the face ABOD to the central point of the face BEFO will be:

In the cube of side 'a' shown in the figure , the vector from the central point of the face ABOD to the central point of the face BEFO will be:

  • Option 1)

    \frac{1}{2}a\left ( \widehat{k} - \widehat{i} \right )

  • Option 2)

    \frac{1}{2}a\left ( \widehat{i}- \widehat{k} \right )

  • Option 3)

    \frac{1}{2}a\left ( \widehat{j}- \widehat{i} \right )

  • Option 4)

    \frac{1}{2}a\left ( \widehat{j} - \widehat{k}\right )

Answers (1)

best_answer

 

Vector Subtraction -

When two vectors are having different direction, then these vectors said to follow law of vector subtraction.

- Direction is same as of that vector whose magnitude is greater/large.

- wherein

Vector \vec{A} moves in east direction with 4 magnitude  & vector B is in west direction. With 2 magnitude. Find their resultant ?.

\xrightarrow[{\vec{A}\; \;\; \; \; \; \; \; \; east}]{4}

\xleftarrow[{\vec{B}\; \;\; \; \; \; \; \; \; west}]{2}

= \vec{A}-\vec{B}=4-2=2

Resultant vector is in east because \vec{A}has grater magnitude.

\vec{r_{g}}=\frac{a}{2}\widehat{i}+\frac{a}{2}\hat{K}

\vec{r_{h}}=(\frac{a}{2})\widehat{j}+(\frac{a}{2})\hat{K}

GH=\vec{r_{H}}-\vec{r_{g}}= \frac{a}{2} ( \widehat{j}-\widehat{i} )

 

 


Option 1)

\frac{1}{2}a\left ( \widehat{k} - \widehat{i} \right )

Option 2)

\frac{1}{2}a\left ( \widehat{i}- \widehat{k} \right )

Option 3)

\frac{1}{2}a\left ( \widehat{j}- \widehat{i} \right )

Option 4)

\frac{1}{2}a\left ( \widehat{j} - \widehat{k}\right )

Posted by

admin

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JAC Chandigarh Counselling 2025: Round 1 seat allotment result out for BTech admissions
anam-khan

JoSAA round 5 seat allotment result 2025 out on josaa.nic.in
anam-khan

BTech aspirant from north-east or UT? Apply for CSAB NEUT counselling 2025 today

Latest Question