Physics WAEC Past Questions

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216

The expansion of solids can be considered a disadvantage in the

A. fire alarm system
B. thermostat
C. riveting of steel plates
D. balance wheel of a watch
E. fitting of wheels on rims.

View Answer & Discuss (1) WAEC 1993

217

A solid metal cube of side 10 cm is heated from
10^oC to 60^oC. lf the linear expansivity of the metal is 1.2 x 10⁵K^-1, calculate the increase in its volume.

A. 0.6cm³
B. 1.2 cm³
C. 1.8 cm³
D. 3.6 cm³
E. 6.0cm³.

View Answer & Discuss (6) WAEC 1993

218

A gas has a volume of 546 cm3 at OºC. What is the volume of the gas at -100ºC if its pressure remains constant?

A. 346cm³
B. 446cm³
C. 546cm³
D. 646cm³
E. 746 cm³.

View Answer & Discuss (10) WAEC 1993

219

Which of the following are correct of plane- polarized light? I. Plane polarization of light is the formation of hydrogen bubbles on the particles of light. II. Plane polarization of light is the splitting of light into its spectral components III. Plane-polarized light vibrates in one plane only. IV. Polarization is characteristic of transverse waves.