A vector a has components 3p and 1... | Vectors JEE Main 2021

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JEE MAIN 2021

18-03-21 S1

Question

A vector $\vec{a}$ has components $3 p$ and 1 with respect to a rectangular cartesian system. This system is rotated through a certain angle about the origin in the counter clockwise sense. If, with respect to new system, $\vec{a}$ has components $\mathrm{p}+1$ and $\sqrt{10}$, then a value of $p$ is equal to:

Select the correct option:

A

1

B

$-\frac{5}{4}$

C

$\frac{4}{5}$

D

-1

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

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