The angle between the vectors (i+j) and (j+k) is

The Angle Between The Vectors Ij And Jk Is Physics Question

The angle between the vectors (i+j) and (j+k) is

Options

(a) 90⁰
(b) 60⁰
(c) 30⁰
(d) 45⁰

Correct Answer:

60⁰

Explanation:

A = i + j, B = j + k

A . B = |A| |B| cos θ

where θ is the angle between two vectors A and B.

.·. A.B = (i + j).(j + k) = 1

|A| = √(1² + 1²) = √2,

|B| = √(1² + 1²) = √2

.·. cos θ = A.B / |A| |B| = 1/(√2×√2) = 1/2

θ = cos⁻¹ (1/2) = 60⁰

Related Questions:

  1. Mass and diameter of a ring is 2 kg and 1 m respectively. The moment of inertia
  2. In the adiabatic compression, the decrease in volume associated with
  3. An object is attached to the bottom of a light vertical spring and set vibrating.
  4. The root mean square speed of oxygen molecule (O₂) at a certain temperature is v.
  5. If a magnetic substance is kept in a magnetic field, then which of the following

Topics: Motion in Plane (93)
Subject: Physics (2479)

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

NEETLab Mobile App

Share this page with your friends

Be the first to comment

Leave a Reply

Your email address will not be published.


*