The acceleration of particle with speed v is a = b × v , where b is a constant vector which neither parallel nor anti – parallel to velocity. Then,

Q: The acceleration of particle with speed v is a = b × v , where b is a constant vector which neither parallel nor anti – parallel to velocity. Then,

(a) The velocity of the particle remains constant

(b) The work done on the particle is zero

(c) The speed of the particle remains constant

(d) The work done on the particle is non-zero

Ans: (b) , (c)