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If A=4i+4j+4k and b=3i+j+4k, then angle between vectors A and B is
Options
(a) 180ﾟ
(b) 90ﾟ
(c) 45ﾟ
(d) 0ﾟ
Correct Answer:
90ﾟ
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Difficulty Level: Easy
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- 24 cells of emf 1.5 V each having internal resistance of 1 ohm are connected
- In Young’s double slit experiment, the ratio of maximum and minimum intensities
- A particle of mass m is projected with a velocity v making an angle of 45°
- A block of mass m is moving on a wedge with the acceleration aᵒ
- The dimension of 1/2ε₀E², where ε₀ is permittivity of free space and E is electric field
Difficulty Level: Easy (1008)
Topics: Motion in Plane (93)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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a.b=|a||b|cos(x)
(4,4,-4) (3,1,4) = 4×3+4×1+(-4)x4
= 12+4-16
=0