When a ball rolls on a smooth level ground, the motion of its center is
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1995
The length of a displaced pendulum ball which passes its lowest point twice every seconds is [g = 10m-2]
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1995
Which of the following is the dimension of pressure?
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1995
Which of the following statements are TRUE about frictional force? i. it is always a disadvantage ii. it is sometimes a disadvantage iii. it always exist where there is a relative motion of two bodies that are in contact…
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1995
A vehicle of mass m is driven by an engine of power P from rest. Find the minimum time it will take to acquire a speed
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1995
A uniform rod PQ of length 1m and mass 2kg is pivoted at the end p. If load of 14N is placed at the center of the rod, find the force that should be applied vertically upwards at Q to maintain the rod at equilibrium hori…
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1995
A body is projected from the earth's surface with the intention of letting it escape from the earth's gravitational field. What is the minimum escape velocity of the body? [Earth's radius = 6.4 x 103km, g = 10ms-2]
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1995
What is the acceleration due to gravity 'g' on the moon, if g is 10-2 on the earth?
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1995
A rectangular metal block of volume 10-6m3 at 273k is heated to 573k. If its coefficient of linear expansion is 1.2 x 10-5k-1, the percentage change of it volume is
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1995
Temperature is the measure of the
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1995
The volume of an air bubble increases from the bottom to the top of a lake at constant temperature because
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1995
A hydraulic press has a large circular piston of radius 0.8m and a circular plunger of radius 0.2m. A force of 500N is exerted by the plunger. Find the force exerted on the piston
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1995
The energy contained in a wire when it extended by 0.02m by a force 500 N is
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1995
A quantity of ice at 10oC is heated until the temperature of the heating vessel is 90oC. Which of the following constants is NOT required to determine the quantity of heat supplied to the vessel?
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1995
A temperature scale has a lower fixed point of 40mm and a upper fixed point of 200mm. What is the reading on this scale when a thermometer reads 60oC?
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1995
An electric kettle with negligible heat capacity is rated at 2000W. If 2.0kg of water is put in it, how long will it take the temperature of water to rise from 20OC to 100OC? [specific heat capacity of water = 4200Jkg-1k…
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1995
The equation PxVyTz = constant in charles' law when
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1995
A piece of wood floats inside water at room temperature with a fraction of it above the liquid surface. As the temperature of the water is raised, the part of the wood above the liquid will
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1995
The difference between sound waves and light waves is that sound waves
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1995
The wavelength of signals from a radio transmitter is 1500mm and the frequency is 200kHz. What is the wavelength for a transmitter operating at 100kHz?