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3-1.Vectors
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Maximum and minimum magnitudes of the resultant of two vectors of magnitudes $P$ and $Q$ are in the ratio $3:1.$ Which of the following relations is true
A
$P = 2Q$
B
$P = Q$
C
$PQ = 1$
D
None of these
Solution
(a) According to problem $P + Q = 3\;{\rm{and }}P – Q = 1$
By solving we get $P = 2\;{\rm{and }}Q = 1$
$\therefore \frac{P}{Q} = 2$
$⇒$ $P = 2Q$
Standard 11
Physics
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