Class 9 Physics MCQs (Grade 9) From Textbook

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Class 9 Physics MCQs – Certification Test 505

Physics: Efficiency Trivia (Question 505) – App & e-Book Download

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MCQ: 505

A system which gives an output equal to the total energy used by it is called

  1. negative system
  2. non-ideal system
  3. ideal system
  4. slow system

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Physics Efficiency Trivia Apps (iOS & Android)

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