Lesson eLearning

Why do field lines in 'Motion in a Straight Line' never intersect each other?

medium MCQ Class 11 · Physics · Motion in a Straight Line
  1. Because if they intersected, there would be two unique tangent directions of field vector at one point
  2. Because field lines carry mechanical mass
  3. Because field lines are physical wires in space
  4. Because energy would become negative
Answer
Because if they intersected, there would be two unique tangent directions of field vector at one point

The correct answer is Because if they intersected, there would be two unique tangent directions of field vector at one point — Intersections would imply two simultaneous directions for force at a single point, which is physically impossible.

Step-by-step solution

  1. The tangent to a field line at any point gives the direction of the net force vector at that point.
  2. Intersections would imply two simultaneous directions for force at a single point, which is physically impossible.

Concept tested: Field Line Properties

Published · How this solution was prepared and checked

← All Motion in a Straight Line questions