2010
An electric drill rated 400W is used to drill a hole in copper of mass 400g in 20s. Calculate the rise in temperature if all the heat produced is absorbed by the copper. [specific heat capacity of copper = 400Jkg-1K-1]
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2010 WAEC SSCE Physics Past Questions
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2010
Specific heat capacity 36.4 Jkg-1 K-1 of a body means that when 26.4J of heat energy is supplied to a body of
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2010
The pressure P, volume V, and absolute temperature T of a given mass of an ideal gas change simultaneously. Which of the following equations is correct about the gas?
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2010
In a thermos flask, heat loss by radiation is minimizes by the
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2010
The following devices use plane mirrors in their operations, except
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2010
The ability of a wave to spread around corners is called
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2010
A certain wave has a speed of 20ms-1. If the frequency of the wave is 0.25Hz, calculate the distance between successive crests of the wave
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2010
Dew point is not affected by
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2010
A solid of mass 0.5kg initially at 50oC melts at 60oC. Calculate the quantity of heat required to melt it completely. [specific heat capacity of the solid =2.0KJ kg-1K-1][Specific latent heat of fusion of solid =1.0 KJ k…
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2010
Which of the following electromagnetic wave has the longest wavelength?
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2010
A lens that is thinner at the middle and thicker at the edges is
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2010
A ray of light travels from air to water. The refractive index of water is given by the expression
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2010
From the diagram, the correct equation for the refractive index n of the medium is
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2010
When an object is placed at the principal focus of a concave mirror, the location of the image formed is
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2010
Use the diagram above to calculate the current, I.
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2010
Capacitors are used in the following devices, except
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2010
As the air column of length L in an air pipe decreases, the frequency of the sationary wave emitted
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2010
Which of the following factors will increase the sensitivity of moving coil meter?
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2010
In the wiring of houses, the fuse is connected to the wire coloured
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2010
A galvanometer of internal resistance 50\(\Omega\) and full scale deflection of 20 mA is converted into a voltmeter by connecting a resistor of resistance 1950\(\Omega\) in series to it. Calculate the maximum voltage tha…
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