If ray travelling in air is incident on a transparent medium as shown in the diagram, the refractive index of the medium is given as
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2001
The diagram above is a block and tackle pulley system in which an effort of 80N is use to lift a load of 240N. The efficiency of the machine is
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2001
In the diagram above, determine the r.m.s current
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2001
In the circuit diagram above , the ammeter reads a current of 3A when R is 5Ω and 6A when R is 2Ω. Determine the value of x
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2001
The diagram above shows a closed side 0.5m in a uniform electric field E in the direction shown by the arrows. What is the flux Φ for the box?
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2001
What is the angle of dip at the magnetic equator
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2001
A bread toaster uses a current of 4A when plugged in a 24oV line. it takes 1 minute to toast slices of bread. what is the energy consumed by the toaster
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2001
Find the frequencies of the first three harmonics of a piano string of length 1.5m, if the velocity of the wave on the string is 120ms-1
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2001
If a ray traveling in air is incident on a transparent medium as shown in the diagram, the refractive index of the medium is given as
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2001
In the circuit diagram above , the ammeter reads a current of 3A when R is 5Ω and 6A when R is 2Ω. Determine the value of x.
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2001
I. Low pressure.II. High pressure.III. High p.d.IV. Low p.d.Which combination of the above is true of the conduction of electricity through gases?
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2001
The ratio of electrostatic force FE to gravitational force FG between two protons each of charge e and mass m, at a distance d is
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2001
A string is fastened tightly between two walls 24cm apart. The wavelength of the second overtone is
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2001
I. The earth is not spherical but elliptical in shapeII. Variation in latitude and longitudeIII. Rotation of the earth on its axisIV. Variation in the density of the earthOn which combination of the above does the weight…