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Let veca=hati+4hat(j)+2hat(k),vecb=3hat(...

Let `veca=hati+4hat(j)+2hat(k),vecb=3hat(i)-2hat(j)+7hat(k)" and " vecc=2hat(i)-hatj+4hatk`. Find a vector `vecd` which is perpendicular to both the vectors `veca" and "vecb" and " vec c*vecd=18`.

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answer any one question : (ii) let vec a= hat i+4 hat j+ 2hat k , vec b=3 hat i- 2 hat j +7 hat k and vec c= 2 hat i- hat j + 4 hat k . Find a vector vec d which is perpendicular to both the vectors vec a and vec b and vec c . vec d=18

Let vec ( a) = hat (i) + 4 hat (j) + 2 hat (k), vec (b) = 3 hat(i) - 2 hat (j) - 7 hat (k) and vec (c ) = 2 hat (i) - hat (j) + 4 hat (k) . Find a vector vec (d) which is perpendicular to both vec (a) and vec (b) and vec ( c) . vec(d) = 18

If vec(a)=hat(i)+hat(j)+hat(k), vec(b)=2hat(i)-hat(j)+3hat(k) " and " vec(c)=hat(i)-2hat(j)+hat(k) find a unit vector in a direction parallel to vector (2vec(a)-vec(b)+3vec(c)) .

If veca=5hat(i)-hatj-3hat(k)" and "vecb=hati+3hat(j)-5hat(k) , show that veca+vecb and veca-vecb are perpendicular to each other.

If vec(a)=hat(i)+2hat(j)-hat(k) " and " vec(b)=3hat(i)+hat(j)-5hat(k) , find a unit vector in a direction parallel to vector (vec(a)-vec(b)) .

If vec(a)=2hat(i)-2hat(j)+hat(k), vec(b)=2hat(i)+3hat(j)+6hat(k) " and " vec(c)=-hat(i)+2hat(k) , then find the magnitude and direction of the vector vec(a)-vec(b)+2vec(c) .

If vec a= hat i+hat j- hat k, vec b= -hat i+2 hat j+ hat k and vec c = - hat i+2 hat j- hatk , then show that the unit vector perpendicular to vec a+ vec b and vec b+ vec c is hat k .

If vec(a)=2hat(i)+hat(j)-3hat(k), vec(b)=5hat(i)+4hat(j)+2hat(k) " and " vec(c)=3hat(i)-3hat(j)-2hat(k) , then find the magnitude of the vector vec(a)+vec(b)+2vec(c) and a unit vector in the direction of this vector.

If vec(a)=2hat(i)-5hat(j)+3hat(k) " and " vec(b)=hat(i)-2hat(j)-4hat(k) , find the value of abs(3vec(a)+2vec(b)).

If the vectors 3 hat (i) - 2 hat (j) + m hat (k) and - 2 hat (i) + hat (j) +4 hat (k) are perpendicular to each other , find the value of m

CHHAYA PUBLICATION-QUESTION PAPER -2018-WBJEE
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