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# Efficiency: O Level Physics Multiple Choice Questions p. 110

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Study Efficiency O Level Physics multiple choice questions and answers, efficiency o level physics quiz answers PDF 110 to study O Level Physics course online. Energy, Work and Power MCQ trivia questions, efficiency o level physics Multiple Choice Questions (MCQ) for online college degrees. "Efficiency: O Level Physics MCQ" PDF eBook: pressure in liquids, measurement of time, density: o level physics, introduction to light, efficiency: o level physics test prep for schools that offer online bachelor degrees.

"A machine uses total energy of 5000 J and within the process one-fourth of the energy is lost to the surroundings. The efficiency of the machine is" MCQ PDF: 50%, 25%, 75%, and 90% for ACT practice test. Learn energy, work and power questions and answers to improve problem solving skills for GRE subject tests.

## Efficiency: O Level Physics Questions and Answers MCQs

MCQ: A machine uses total energy of 5000 J and within the process one-fourth of the energy is lost to the surroundings. The efficiency of the machine is

25%
50%
75%
90%

MCQ: Objects that don't produce their own light are called

Luminous objects
Non-luminous objects
Transparent objects
Opaque objects

MCQ: Density of gold is 19300 kg m-3 and its volume is 0.48 m³, mass of gold would be

9426 kg
9642 kg
9264 kg
9246 kg

MCQ: For most of the people, human reaction error is about

0.03 s
0.3 s
3 s
30 s

MCQ: Hydraulics are

good example of pressure
good example of pressure in liquids
bad example of pressure in liquids