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"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", efficiency o level physics Multiple Choice Questions (MCQ) with choices 50%, 25%, 75%, and 90% to study online certificate courses. Learn energy, work and power questions and answers to improve problem solving skills for GRE subject tests. Efficiency: O Level Physics Video
Efficiency: O Level Physics Questions and Answers PDF Download eBook
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%
C
MCQ: Objects that don't produce their own light are called
- Luminous objects
- Non-luminous objects
- Transparent objects
- Opaque objects
B
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
C
MCQ: For most of the people, human reaction error is about
- 0.03 s
- 0.3 s
- 3 s
- 30 s
B
MCQ: Hydraulics are
- good example of pressure
- bad example of pressure
- good example of pressure in liquids
- bad example of pressure in liquids
C