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"In a typical power station, amid a series of energy transfers and conversions, about 70% of the energy input gets wasted in the form of thermal energy, the efficiency of such a power station is about", efficiency o level physics Multiple Choice Questions (MCQ) with choices 0.4, 0.3, 0.7, and 1 to learn online classes courses. Learn energy, work and power questions and answers to improve problem solving skills for online bachelor degree programs. Efficiency: O Level Physics Video
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MCQ: In a typical power station, amid a series of energy transfers and conversions, about 70% of the energy input gets wasted in the form of thermal energy, the efficiency of such a power station is about
- 0.3
- 0.4
- 0.7
- 1
A
MCQ: Mass of oil is 11040 kg and the volume is 12 m³, its density would be
- 92 kg m-3
- 920 kg m-3
- 9.2 kg m-3
- 1.08 × 10-3
B
MCQ: When the state is being changed from gas to liquid through the process of condensation, the temperature
- increases
- decreases
- remains constant
- may increase or decrease
C
MCQ: Sound passes from one place to another in the form of
- rays
- waves
- energy
- light
B
MCQ: If a cup of tea at 50 °C is allowed to cool to room temperature, heat released would be (assume room temperature to be equal to 25 °C and heat capacity of the cup and tea to be = 5.0 kJ ⁄ K)
- 25 kJ
- 50 kJ
- 125 kJ
- 250 kJ
C