Kinematics Question 263

Question: Consider two vectors F→1=2i^+5k^ and F→2=3j^+4k^. The magnitude of the scalar product of these vectors is [MP PMT 1987]

Options:

A) 20

B) 23

C) 533

D) 26

Show Answer

Answer:

Correct Answer: D

Solution:

F→1.F→2=(2j^+5k^)(3j^+4k^)

=6+20=20+6=26

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