| ⇦ | 
| ⇨ |
If two vectors are equal in magnitude and their resultant is also equal in magnitude to one of them, then the angle between the two vectors is
Options
(a) 60°
(b) 120°
(c) 90°
(d) 0°
Correct Answer:
120°
Explanation:
The angle θ between the vector A and B
Using the cosine rule, R² = A²+B²-2AB cosθ
Where R=A=B, then
R² = R²+R²-2RR cosθ
cosθ = -1/2
θ = 120°.
Related Questions: - Two resistors of 6Ω and 9Ω are connected in series to a 120 V source.
- A particle in simple harmonic motion is described by the displacement function
- The nuclear fusion reaction between deutrium and tritium takes place
- The unit of specific conductivity is
- When a radioactive substance emits an ∝ particle, its position in the periodic table
Topics: Motion in Plane
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two resistors of 6Ω and 9Ω are connected in series to a 120 V source.
- A particle in simple harmonic motion is described by the displacement function
- The nuclear fusion reaction between deutrium and tritium takes place
- The unit of specific conductivity is
- When a radioactive substance emits an ∝ particle, its position in the periodic table
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.
Share this page with your friends
Leave a Reply