vector algebra (4)

There are how many types of product for two vectors ?

• 1

• 2

• 3

• 4

Scalar (or Dot) product of two vectors always give a scalar quantity (or number)

• True

• False

Cross product of two vector always gives scalar quantity

• True

• False

Dot product (or scalar product) of two non zero vector a and vector b is denoted by

• a . b = ।a। .।b। cosΦ

• a . b = a₁.b₁ + a₂.b₂ + a3.b₃

• Both of the above

• None of the above

Dot Product of the vectors i - 2j + 3k and 3i - 2j + k is

• 8

• 10

• 2

• -2

Dot product of vector -i + 2j + k and 3i + k is

• 5

• -1

• 4

• -2

If ।a। = 3

।b। = 6

a.b = 9

find the angle between vector a and vector b

• π/6

• π/3

• π/4

• π/2

If two vectors are perpendicular then what is the value of the dot product of them

• 0

• 1

Dot product of the two vector is a real number

• True

• False

Which of the following is/are wrong statement (select two options)

• i . i = 1

• j . j = 0

• i . k = 1

• j . i = 0