The torque about the point 2i+j-k of a represented by 4i+k acting through the point (i-2j+2k) is

1.  2i+13j+8k

2.  2i+13j-8k

3.  2i-13j+8k

4.  -2i+13j+8k

4

-2i+13j+8k

Explanation :
No Explanation available for this question

A forces F=2i-λj+5k is applied at the point A(1, 2, 5). If its moment about the point (-1, 2, 3) is 16i-6j+2λk, then λ=

1.  -2

2.  -1

3.  0

4.  2

4

-2

Explanation :
No Explanation available for this question

[i+j j+k k+i]=

1.  1

2.  -1

3.  2

4.  -2

4

2

Explanation :
No Explanation available for this question

If a=i-j-6k, b=i-3j+4k, c=2i-5j+3k then [a b c]=

1.  0

2.  1

3.  -1

4.  2

4

0

Explanation :
No Explanation available for this question

(2i-3j+k).(i-j+2k)x(2i+j+k)=

1.  -12

2.  14

3.  10

4.  15

4

-12

Explanation :
No Explanation available for this question

If a is perpendicular to b and c, |a|=2, |b|=3, |c|=4 and the angle between b and c is 2π/3 then |[a  b c]|=

1.  24

2.  12

3.  12√3

4.  24√3

4

12√3

Explanation :
No Explanation available for this question

If a, b and c are mutually perpendicular unit vectors, then [a b c]2=

1.  1

2.  0

3.  2

4.  3

4

1

Explanation :
No Explanation available for this question

The volume of the parallelepiped whose conterminal edges are 2i-3j+4k, i+2j-2k, 3i-j+k is

1.  5

2.  6

3.  7

4.  8

4

6

Explanation :
No Explanation available for this question

The volume of the parallelepiped whose edges are represented by 2i-3j, i+j-k, 3i-k is

1.  -1

2.  2

3.  3

4.  4

4

4

Explanation :
No Explanation available for this question

1.  1

2.  4

3.  2

4.  8

4