R

Ram Sharma • 193.88K Points
Coach Physics

Q. A motor running on electricity at the rate of 400 W raises a block of weight 120 N. If the block moves 8 m vertically in 4 s, the efficiency of the motor is

  • (A) 30%
  • (B) 48%
  • (C) 60%
  • (D) 24%
  • Correct Answer - Option(C)
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  • Filed under category Physics

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