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vecR is the resultant of the vectors vec...

`vecR` is the resultant of the vectors `vecA and vecB`. If R`=B/(sqrt(2))` then the angle `theta` is

A

`30^@`

B

`45^@`

C

`60^@`

D

`75^@`

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The correct Answer is:
B
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CHHAYA PUBLICATION-VECTOR-EXERCISE (Multiple Choice Questions)
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  9. The angles which the vector vecA =3hati+6hatj+2hatk makes with the coo...

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  10. If veca+vecb=vecc, and a+b=c then the angle between veca and vecb is

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  11. If a1 and a2 are two non-collinear unit vectors and if |a1+a2|=sqrt(3)...

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  12. Which of the following is a vector quantity ?

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  13. The resultant of two forces of magnitude (x+y) and (x-y) is sqrt(x^2+y...

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  14. The sum of magnitudes of two forces acting at a point is 16 N. The r...

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  15. Two men have velocities of 4 m/s towards east and 3 m/s towards sout...

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  16. Two forces in the ratio 1:2 act simultaneously on a particle. The resu...

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  17. Given vecA=2hati+3hatj and vecB=hati+hatj . The component of vector ve...

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  18. One of the components of a velocity vector of magnitude 50 m*s^(-1) i...

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