vectors
Asked by Venkat phy lect | 19th Jul, 2013, 11:10: PM
Expert Answer:
Let A and B be the vectors. [bold letters represent vector quantity]
Given that, (A+B) is perpendicular to (A-B).
Now,
(A+B).(A-B) = 0 [since, they are perpendicular]
=> A.A A.B + B.A B.B = 0
=> A2 B2 = 0
=> A = B
Thus, the vectors are of same magnitude.
option 1 is correct.
Let A and B be the vectors. [bold letters represent vector quantity]
Given that, (A+B) is perpendicular to (A-B).
Now,
(A+B).(A-B) = 0 [since, they are perpendicular]
=> A.A A.B + B.A B.B = 0
=> A2 B2 = 0
=> A = B
Thus, the vectors are of same magnitude.
option 1 is correct.Answered by | 20th Jul, 2013, 11:54: AM
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