When a telescope is in normal use, the final image is at
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2014
A quantity which requires magnitude and direction to be specified is
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2014
What is the least possible error encountered when taking measurement with a meter rule?
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2014
An object of weight 80kg on earth is taken to a planet where acceleration due to gravity is one-third of its value on earth. The weight of the object on the planet is
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2014
Calculate the escape velocity of a satellite launched from the earth's surface if the radius of the earth is 6.4x106m
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2014
A car accelerates uniformly from rest at 3ms-2. its velocity after traveling a distance of 24m is
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2014
Which type of motion do the wheels of a moving car undergo?
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2014
I Electrical potential, II Torque, III Kinetic Energy, IV Momentum. Which of the quantities listed are vectors?
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2014
A machine whose efficiency is 75% is used to lift a load of 1000N. Calculate the effort put in to the machine if it has a Velocity ratio of 4.
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2014
The energy in the nucleus of atoms produce heat which can be used to generate
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2014
An object of mass 20kg is released from a height of 10m above the ground level. The kinetic energy of the object just before it hits the ground is
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2014
What happens when three coplanar non-parallel forces are in equilibrium?
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2014
One of the conditions necessary for an object to be in equilibrium when acted upon by a number of parallel forces is that the vector sum of the forces is
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2014
The equation PaVbTc= constant reduces to Charles Law if
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2014
What is the equivalent of 20K in Celsius scale?
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2014
The small droplets of water that form on the grass in the early hours of the morning is
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2014
A force of 500N1 is applied to a steel wire of cross-sectional area 0.2m2, The tensile stress is
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2014
A wheel and an axle is used to raise a load whose weight is 800N when an effort of 250N is applied. If the radii of the wheel and axle are 800mm and 200mm respectively, the efficiency of the machine is
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2014
The distance between two successive crests of a wave is 15cm and the velocity 300ms-1. Calculate the frequency.
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2014
Heat transfer by convection in a liquid is due to the