If bara = -bari+2barj+3bark, barb = bari...

If `bara = -bari+2barj+3bark, barb = bari -2barj+bark, barc = 4bari-3barj-2bark and bara +lambda barb " is perpendicular to " barc, " then " lambda` =

A

1

B

2

C

3

D

4

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The correct Answer is:

B

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AAKASH SERIES-DOT PRODUCT OF TWO VECTORS-EXERCISE - II

Find the cartesian equation of the plane through the point A (2,-1,-4)...
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The cartesian equation of the plane passing through (1,1,1) and contai...
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The vector equation of the plane through the point (1,1,-1) and passin...
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Let A = (bari-barj+3bark), B=(3bari+3barj+3bark) " be two points and "...
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Angle between the line barr = (-bari+3barj+3bark)+t(2bari+3barj+6bark)...
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If 3bari+4barj+5bark is P.V. of one end of a diameter of the sphere a...
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The force barF = 2bari+2barj-bark " acting at " bara =bari-2barj+bark ...
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A particle is acted upon by constant forces 4bari+barj-3bark and 3bari...
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Three forces having magnitudes 5,4 and 3 units act on a particle in th...
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Which of the following statements is are correct Statement -I : For ...
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If bar a and bar b are two unit vectors inclined at an angle alpha to ...
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Assertion (A) : bara,barb,barc and bard are the position vectors of fo...
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If a,b and c are vectors with magnitudes 2,3 and 4 respectively then t...
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If, absbara = 3, absbarb = 4 abs(bara+barb) = 1 " ,then " abs(bara-bar...
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If the vectors bara = (1,x,-2), barb = (x,3,-4) are mutually perpendic...
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If bara = -bari+2barj+3bark, barb = bari -2barj+bark, barc = 4bari-3ba...
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If 'theta' is an acute angle and the vector (sin theta)bari +(cos thet...
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If bara.(barb+barc) = barb.(barc+bara) = barc.(bara+barb) =0 and absba...
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If bara+barb+barc=bar0 and absbara=3, absbarb = 4, absbarc =sqrt37, " ...
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If the angle theta between the vectors bara = 2x^(2)bari +4xbarj+bark ...
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