2010
An X-ray tube operates at a potential of 2500 V. If the power of the tube is 750 W, calculate the speed of the electron striking the target. [e = 1.6 x 10\(^{-19}\) C; mass of electron = 9.1 x 10\(^{-3}\) kg]
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2010 WAEC SSCE Physics Past Questions
2010
State one reason each why cathode rays:(a) are not electromagnetic waves;(b) cast sharp shadows of objects in their path;(c) can rotate a light paddle wheel inside a discharge tube.
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2010
(a) List two examples each of substances with:(i) low viscosity;(ii) high viscosity.(b) When is a liquid said to be viscostatic?
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2010
(a) Differentiate between plane polarization and interference as applied to waves.(b) List two uses of polaroids.
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2010
(a) State two factors which affect the mass of elements deposited during electrolysis.(b) List two non-electrolysis.
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2010
When a lead-acid accumulator is fully charged, evolution of gases occurs at the electrodes. Name these gases and the respective electrodes at which thcy are given off.
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2010
A force of 40 N is applied at the free end of a wire fixed at one end to produce an extension of 0.24 mm. If the original length and diameter of the wire art., 3 m and 2.0 mm respectively, calculate the: (a) stress on th…
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2010
A stone is projected vertically upward with a speed of 30ms\(^{1}\) from the top of a tower of height 50 m. Neglecting air resistance, determine the maximum height it reached from the ground. [g = 10 ms\(^-2\)]
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