⇦ | ⇨ |
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
(1008)
Topics: Motion in Plane
(93)
Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Consider two nuclei of the same radioactive nuclide. One of the nuclei was created
- A 220 volt and 1000 watt bulb is connected across a 110 volt mains supply.
- When the wave of hydrogen atom comes from infinity into the first orbit,
- A spring of spring constant 5 x 10³ Nm⁻¹ is streched intially by 5 cm from
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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