`" If the vectors "P=ahat i+ahat j+3hat k" and "Q=ahat i-2hat j-hat k" are perpendicular to each other, then the positive value of "a" is "`

If the vectors vec A=hat ai+ahat j+3hat k and vec B=hat ai-2hat j-hat k are perpendicular to each other,then the positive value of a is

If the vectors vec A=hat i+hat j+3hat k and vec B=xhat i-2hat j-hat k are perpendicular to each other then the positive value of x is

If the vec P=ahat i+8hat j+ahat k and vec Q=ahat i-hat j-2hat k are perpendicular each other then the positive value of a is.

If the vec P=ahat i+8hat j+ahat k and vec Q=ahat i-hat j-2hat k are perpendicular to each other then the positive value of 'a' is. (A) Zero (B) 1 (C) 2 (D) 4

The vector vec(P)= ahat(i)+ahat(j)+3hat(k) and vec(Q)= ahat(i)-2hat(j)-hat(k) are perpendicular to each other. The positive value of a is

The vectors 2hat i+3hat j-4hat k and ahat i+bhat j+chat k are perpendicular,

The vectors vec P = a hat I + a hat j + 3 hat k) and vec Q = a hat I - 2 hat j - hat kl are peroendicular to each other. The positve value of (a) is.

If the vectors hat i+3hat j+4hat k,lambdahat i-4hat j+hat k ,are orthogonal to each other,then lambda=

Two vectors P=2hat I +bhat j +2hat k and Q=hat i+hat j+hat k will be parallel if :

Find the value of lambda .If the vectors 2hat i+lambdahat j+3hat k and 3hat i+2hat j-4hat hat j are perpendicular to each other.