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Question 10

JEE Main Problem Solver Diagnostic Quiz · Deck: JEE Main Master Class: Calculus, Mechanics, Coordinate Geometry

Given vectors $\vec{a} = 2\hat{i} + 3\hat{j}$ and $\vec{b} = \hat{i} - 2\hat{j}$, what is the scalar projection of $\vec{a}$ onto $\vec{b}$?

  1. $-\frac{4}{\sqrt{5}}$
  2. $\frac{4}{\sqrt{5}}$
  3. $-4$
  4. $\frac{2}{\sqrt{13}}$

Source: Vectors in Physics, OpenStax University Physics Volume 1

Exam guide: JEE Main — subjects, format and official sources.

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