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Questions  

What can be the angle between (P+Q)   and  (PQ)?

a
900
b
00 only
c
any angle between 00 and 1800
d
1800 only

detailed solution

Correct option is C

β is the angle between P→+Q→   and  P→ −Q→. β can have any value from 00 to 1800depending upon magnitudes of P→ and Q→ and angle θ between them.

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