Which of the following physical quantities affect the saturated vapour pressure of a liquid?
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FUTO Post UTME Physics Past Questions
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The amount of heat given out or absorbed when a substance change its state at a constant temperature is known as
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A simple machine with an efficiency of 75% lifts a load of 5000N when a force of 500N is applied to it. Calculate the velocity ratio of the machine.
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Electrical resistance is a property of an electrical conductor that causes electrical energy to be converted into
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The time rate of change of momentum is
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A block weighing 15N rests on a flat surface, and a horizontal force of 3N is exerted on it. Determine the frictional force on the block.
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Which of the following statements about pressure is not correct?
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An object of weight 10N immersed in a liquid displaces a quantity of the liquid. If the liquid displaced weighs 6N, determine the up thrust on the object.
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A spring balance which is suspended from the roof of a lift carries a mass of 1kg at its free end. If the lift accelerates upward at 2.5ms\(^{-2}\) determine the reading on the spring balance [g = 10ms\(^{-2}\)]
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Which of the following physical processes cannot be explained by the molecular theory of matter?
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The odour of a leaking gas is perceived at a distance from the source. This is made possible by the process of
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In a photocell light energy is converted to
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Two identical waves travelling in the same direction arc super imposed. What should be the phase difference between the waves for maximum destructive interference to occur?
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When white light is incident on a glass prism the spectrum produced on a screen placed•beyond the prism is due to
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A fixed mass of gas occupies a volume of 20cm\(^3\) at a pressure of 700mmHg. Assuming that the temperature remains constant, what will be the volume of the gas at 750mm Hg?
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Calculate the quantity of heat released when 100g of steam at 100°C condenses to water (Take the specific latent heat of vapourisation of water as 2.3 \(\times\) 10\(^{6}\)Jkg\(^{-1}\))
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A solid plastic cube of side 0.2m is submerged in a liquid of density 0.8km. Calculate the up thrust of the liquid on the cube. (g = 10ms\(^{-2}\))
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Two forces 3N and 4N act on a body in directions due north and due east respectively. Calculate their equilibrium.
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An object falls freely from a height of 25m into the roof of a building 5m high. Calculate the velocity with which the object strikes the roof. (g = 10ms\(^{-2}\))
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An object of mass 0.40kg attached to the end of a string is whirled round in a horizontal circle of radius 2.0m with a constant speed of 3ms\(^{-1}\). Calculate the regular velocity of the object.
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