Question

Q. 66. A particle is displaced from a position 2 i ^ - j ^ - k ^ to another position 3 i ^ + 2 j ^ - 2 k ^
under the action of the force 2 i ^ + j ^ - k ^ . The work done by the force is an arbitrary unit is
a) 8 b) 10 c) 12 d) 16


67. A force F → = 5 i ^ + 3 j ^ + 2 k ^ N is applied over a particle which displaces it from its origin to the point r → = 2 i ^ - j ^ m. The work done on the particle in joules is
a. -7 b. +7 c) +10 d) +13

68. If A → × B → = B → × A → , then the angle between A and B is

π

π /3

π /2

π /4

Answer 1

Answer:

This is the correct answer to the question

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