Kinematics Question 265

Question: Two vectors A→ and B→ are at right angles to each other, when [AIIMS 1987]

Options:

A) A→+B→=0

B) A→−B→=0

C) A→×B→=0

D) A→.B→=0

Show Answer

Answer:

Correct Answer: D

Solution:

A→.B→=|A→|.|B→|.cos⁡θ=A→.B→.cos⁡90∘=0

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