Physics · 2021
JEE Main · 25 February 2021, Shift 1 · Q5
In an octagon ABCDEFGH of equal side, what is the sum of AB + AC + AD + AE + AF + AG + AH, if, AO =2 i +3 j -4 k
In an octagon ABCDEFGH of equal side, what is the sum of
$$\overrightarrow{\mathrm{AB}}+\overrightarrow{\mathrm{AC}}+\overrightarrow{\mathrm{AD}}+\overrightarrow{\mathrm{AE}}+\overrightarrow{\mathrm{AF}}+\overrightarrow{\mathrm{AG}}+\overrightarrow{\mathrm{AH}},
$$
if, $\displaystyle \overrightarrow{\mathrm{AO}}=2 \hat{i}+3 \hat{j}-4 \hat{k}$
Official answer
(4)
$\displaystyle 16 \hat{i}+24 \hat{j}-32 \hat{k}$
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.