| ⇦ | 
| ⇨ |
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: - The amplitude of S.H.M. y=2 (sin 5πt+√2 cos 5πt) is
- Weight of a body of mass m decreases by 1% when it is raised to height h
- A body starts from rest, what is the ratio of the distance travelled by the body
- The angle between the dipole moment and electric field at any point on the equatoria
- If voltage across a bulb rated 220 volt-100 Watt drops by 2.5% of its rated value
Topics: Motion in Plane
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The amplitude of S.H.M. y=2 (sin 5πt+√2 cos 5πt) is
- Weight of a body of mass m decreases by 1% when it is raised to height h
- A body starts from rest, what is the ratio of the distance travelled by the body
- The angle between the dipole moment and electric field at any point on the equatoria
- If voltage across a bulb rated 220 volt-100 Watt drops by 2.5% of its rated value
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