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Power in Physics MCQs: Questions and Answers PDF Download
A machine has the ability to lift blocks vertically up to a height of 30 m above the ground in 50 s. The power of the machine is
- 1.2 kW
- 0.12 kW
- 300 kW
- 6 kW
The SI unit of power is
- Joule
- Newton
- watt
- pascal
A filament bulb rated at 30 W, coverts 15% of its electrical energy supply into light energy. Calculate the quantity of light energy emitted in 10 minutes.
- 1.8 kJ
- 1.2 kJ
- 1.5 kJ
- 2.4 kJ
One watt is given by
- one second/one joule
- one joule/one second
- one joule/one meter
- one joule/one km
A hurricane possesses a tremendous amount of
- power
- energy
- light
- both power and energy
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College Physics MCQs eBook Download
O Level Physics Practice Questions
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O Level Physics MCQ Questions
- In symbols, formula of acceleration is
- If a bulb uses energy of 100 J and remains on for 25 s, power consumed by bulb will be
- A mobile phone has a mass of 100 g. Find its weight if g is 10 N kg-1
- Velocity is
- A thermometer that is alcohol-in-glass thermometer has l100 23 cm and l0 is 8 cm. If lθ is 2 cm temperature of thermometer would be
Power in Physics MCQs Book Questions
- A 15 N force exerted on a small piston of area 0.025 m2. large piston has area of 0.05 m2. What is pressure exerted on liquid by small piston?
- If lv is specific latent heat of vaporization and m is mass of liquid then latent heat of vaporization(Lv) is equal to
- Value of gravity is approximately
- Angle between incident ray and normal is known as
- SI unit of energy is