JEE Main202522 Jan 2025Evening ShiftPhysicsWork, Power and EnergyActual
A force F =2 i + b j + k is applied on a particle and it undergoes a displacement i -2 j - k . What will be the value of b , if work done on the particle is zero.
Options
- A0
- B1 2
- C2
- D1 3
Correct answer
B. 1 2
Step-by-step solution
aligned & w=0 & F S=0 & (2 i +b j + k ) ( i -2 j - k )=0 & 2-2 b-1=0 & b= 1 2 aligned