JEE Main
Physics
Vector Algebra
Previous Years Questions

A vector in $x-y$ plane makes an angle of $30^{\circ}$ with $y$-axis. The magnitude of $\mathrm{y}$-component of vector is $2 \sqrt{3}$. The magnitude...
When vector $$\vec{A}=2 \hat{i}+3 \hat{j}+2 \hat{k}$$ is subtracted from vector $$\overrightarrow{\mathrm{B}}$$, it gives a vector equal to $$2 \hat{... Two forces having magnitude$$A$$and$$\frac{A}{2}$$are perpendicular to each other. The magnitude of their resultant is: If two vectors$$\overrightarrow P = \widehat i + 2m\widehat j + m\widehat k$$and$$\overrightarrow Q = 4\widehat i - 2\widehat j + m\widehat k$$a... Two vectors$$\overrightarrow A $$and$$\overrightarrow B $$have equal magnitudes. If magnitude of$$\overrightarrow A $$+$$\overrightarrow B $$i...$$\overrightarrow A $$is a vector quantity such that$$|\overrightarrow A |$$= non-zero constant. Which of the following expression is true for$$\o...
Which of the following relations is true for two unit vector $$\widehat A$$ and $$\widehat B$$ making an angle $$\theta$$ to each other?
Statement I :Two forces $$\left( {\overrightarrow P + \overrightarrow Q } \right)$$ and $$\left( {\overrightarrow P - \overrightarrow Q } \right)$$ ...
The resultant of these forces $$\overrightarrow {OP} ,\overrightarrow {OQ} ,\overrightarrow {OR} ,\overrightarrow {OS}$$ and $$\overrightarrow {OT} ... The angle between vector$$\left( {\overrightarrow A } \right)$$and$$\left( {\overrightarrow A - \overrightarrow B } \right)$$is :... The magnitude of vectors$$\overrightarrow {OA} $$,$$\overrightarrow {OB} $$and$$\overrightarrow {OC} $$in the given figure are equal. The directi... Assertion A : If A, B, C, D are four points on a semi-circular are with centre at 'O' such that$$\left| {\overrightarrow {AB} } \right| = \left| {\ov...
Two vectors $$\overrightarrow X$$ and $$\overrightarrow Y$$ have equal magnitude. The magnitude of ($$\overrightarrow X$$ $$-$$ $$\overrightarrow Y... Match List - I with List - IIChoose the correct answer from the options given below :... What will be the projection of vector$$\overrightarrow A = \widehat i + \widehat j + \widehat k$$on vector$$\overrightarrow B = \widehat i + \wid...
Two vectors $${\overrightarrow P }$$ and $${\overrightarrow Q }$$ have equal magnitudes. If the magnitude of $${\overrightarrow P + \overrightarrow Q... If$$\overrightarrow A $$and$$\overrightarrow B $$are two vectors satisfying the relation$$\overrightarrow A $$.$$\overrightarrow B $$=$$\left...
In an octagon ABCDEFGH of equal side, what is the sum of $$\overrightarrow {AB} + \overrightarrow {AC} + \overrightarrow {AD} + \overrightarrow {AE... Let$$\left| {\mathop {{A_1}}\limits^ \to } \right| = 3$$,$$\left| {\mathop {{A_2}}\limits^ \to } \right| = 5$$and$$\left| {\mathop {{A_1}}\limi...
Two vectors $$\overrightarrow A$$ and $$\overrightarrow B$$ have equal magnitudes. The magnitude of $$\left( {\overrightarrow A + \overrightarrow ... In the cube of side ‘a’ shown in the figure, the vector from the central point of the face ABOD to the central point of the face BEFO will be - ... Let$$\overrightarrow A $$=$$\left( {\widehat i + \widehat j} \right)$$and,$$\overrightarrow B = \left( {2\widehat i - \widehat j} \right).$$The... If$$\overrightarrow A \times \overrightarrow B = \overrightarrow B \times \overrightarrow A $$, then the angle beetween A and B is ## Numerical If$$\overrightarrow P = 3\widehat i + \sqrt 3 \widehat j + 2\widehat k$$and$$\overrightarrow Q = 4\widehat i + \sqrt 3 \widehat j + 2.5\widehat k...
Vectors $$a\widehat i + b\widehat j + \widehat k$$ and $$2\widehat i - 3\widehat j + 4\widehat k$$ are perpendicular to each other when $$3a + 2b = 7... If the projection of$$2 \hat{i}+4 \hat{j}-2 \hat{k}$$on$$\hat{i}+2 \hat{j}+\alpha \hat{k}$$is zero. Then, the value of$$\alpha$$will be ________... If$$\vec{A}=(2 \hat{i}+3 \hat{j}-\hat{k})\, \mathrm{m}$$and$$\vec{B}=(\hat{i}+2 \hat{j}+2 \hat{k}) \,\mathrm{m}$$. The magnitude of component of ve... If$$\overrightarrow P \times \overrightarrow Q = \overrightarrow Q \times \overrightarrow P $$, the angle between$$\overrightarrow P $$and$$\ov...
The sum of two forces $$\overrightarrow P$$ and $$\overrightarrow Q$$ is $$\overrightarrow R$$ such that \left| {\overrightarrow R } \right| =...
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