Question

which of the following set of magnitude of vectors cannot be zero? a)1,2,3. b)25,5,15 c)10,5,8 d)15,8, 20​

Answer 1

Answer:

b

Explanation:

sum of 2 vectors must be equal or more than 3rd vector

Answer 2

Answer:

Correct Option is :

b)25,5,15

Explanation:

For (a) 1,2,3

1 + 2 = 3 [ equal to third vector =3]

For (b) 25, 5, 15

5 + 15 = 20 ≠ 25 [ Not zero]

For (c) 10,5,8

5 + 8 = 13 > 10

For (d) 15, 8, 20

15 + 8 = 23 > 20

For set of vectors having magnitude non zero, the sum of two vectors must be equal to or greater than the third vector. [ Triangle Law of vector addition.]