2012
The thermopile is a device for detecting
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2012 WAEC SSCE Physics Past Questions
2012
A metal sheet of area 100cm2 was heated through 70oC. Calculate its new area if the linear expansivity of the metal is 0.000017k-1
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2012
An object is placed at a point X between the focal point F and the optical centre C of a diverging lens. If F is the focal point on the other side of the lens, the image of the object is formed between
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2012
A to eater to glass to air to water to glass to air. Given that the refractive index for light passing from air to water is \(\frac{4}{3}\) and air to glass is \(\frac{3}{2}\), calculate the refractive index of glass rel…
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2012
An object of height 2.5cm is places 20cm from a convex mirror of focal length 10cm. Calculate the height of its image
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2012
Which of the following properties of waves is exclusive to transverse waves?
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2012
When two waves are superimposed on each other, the following occurrences are possible, except
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2012
When two like charges are brought together, the potential energy of the system formed will
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2012
Which of the following sets of coloured light is/are secondary colours i. Red, Blue and green ii. Blue, cyan and magneta iii. Green, Magenta and yellow, IV Yellow, Cyan and Magenta
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2012
The sound heard by a person after the reflection of the sound generated by him is called
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2012
A telescope is said to be in normal adjustment when the
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2012
A 12\(\Omega\) resistor dissipates 8 kJ of heat in 20s. Calculate the current through the resistor
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2012
Six dry cells each of e.m.f. 2.0 and internal resistance of 1.0\(\Omega\) are connected in parallel across a load of 3.0\(\Omega\). Calculate the effective current in the circuit
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2012
Which of the following properties is an advantage of lead-acid accumulator over an alkaline accumulator?
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2012
Two capacitors, each of capacitance 2\(\mu F\) are connected in parallel. If the p.d across them is 120V, calculate the charge on each capacitor
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2012
In a R-C circuit
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2012
An inductor is connected to a 24V, 50Hz mains supply. If the current through the inductor is 1.5A, calculate the inductance of the inductor (\(\pi = \frac{22}{7}\))
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2012
Which of the following modes is the most economical method of transmitting electrical power over long distances?
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2012
the core of a transformer is usually laminated in order to
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2012
The magnetic relay is a device used for
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