Physics 2011 WAEC Past Questions

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A hypsometer is used for determining

A. steam point
B. relative humidity
C. ice point
D. relative density

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Which of the following equations shows how how the linear expansivity (\(\alpha\)) and the cubic expansivity (\(\gamma\)) of a material are related?

A. \(\gamma = \alpha\)
B. \(\gamma = 1 - \alpha\)
C. \(\gamma = 2 \alpha\)
D. \(\gamma = 3 \alpha\)

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Which of the following statements about anomalous expansion of water are correct? i. There is contraction between 0^oC and 4^oC. ii. There is expansion between 0^oC and 100^oC. iii. The volume is minimum at 4^oC. iv. The volume is maximum at 4^oC

A. i and ii only
B. ii and iii only
C. i and iii only
D. ii and iv only

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Which of the following assumptions is not valid for an ideal gas ?

A. molecules of a particular gas are identical
B. molecules moves freely throughout the volume of the container
C. force of attraction between molecules is negligible
D. molecules move at constant speed between collisions

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A body is pulled over a distance of 500m by a force of 20N. If the power developed is o.4 kW, calculate the time interval during which the force is applied

A. 0.2s
B. 2.5s
C. 25.0s
D. 250.0s

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Physics 2011 WAEC Past Questions

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