| ⇦ | 
| ⇨ |
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: - A car moving with a velocity of 36 km/hr crosses a siren of frequency 500 Hz.
- The number of photons of wavelength of 540 nm emitted per second by an electric bulb
- A particle of mass m oscillates along x-axis according to equation x = a sin ?t
- At a given temperature the root mean square velocities of oxygen and hydrogen
- A wire mesh consisting of very small squares is viewed at a distance
Topics: Motion in Plane
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A car moving with a velocity of 36 km/hr crosses a siren of frequency 500 Hz.
- The number of photons of wavelength of 540 nm emitted per second by an electric bulb
- A particle of mass m oscillates along x-axis according to equation x = a sin ?t
- At a given temperature the root mean square velocities of oxygen and hydrogen
- A wire mesh consisting of very small squares is viewed at a distance
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