Two vectors P and Q are inclined at an angle θ and R is their resultant as shown in the figure. Keeping the magnitude and the angle of the vectors same, if the direction of P and Q is interchanged, then their is a change in which of the following with regard to R ?

Question

Two vectors P and Q are inclined at an angle θ and R is their resultant as shown in the figure. <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/f8e47546c88ac062a89c03b9403e23bb-.png" /> Keeping the magnitude and the angle of the vectors same, if the direction of P and Q is interchanged, then their is a change in which of the following with regard to R ? (A) Magnitude (B) Direction (C) Both magnitude and direction (D) None of the above

Tardigrade Admin · Accepted Answer

Since, the magnitude and angle between the vectors is unchanged, so the magnitude of the resultant R will be same. However, the direction of R will get changed.

Q. Two vectors $P$ and $Q$ are inclined at an angle $θ$ and $R$ is their resultant as shown in the figure.

Keeping the magnitude and the angle of the vectors same, if the direction of $P$ and $Q$ is interchanged, then their is a change in which of the following with regard to $R$ ?

Magnitude

Direction

Both magnitude and direction

None of the above

Since, the magnitude and angle between the vectors is unchanged, so the magnitude of the resultant $R$ will be same. However, the direction of $R$ will get changed.

Q. Two vectors P and Q are inclined at an angle θ and R is their resultant as shown in the figure. Keeping the magnitude and the angle of the vectors same, if the direction of P and Q is interchanged, then their is a change in which of the following with regard to R ?