Physics Past Questions

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1706

The angle between the magnetic meridian and the geographic meridian at a locality on the earth is the

A. longitude of the locality
B. angle of inclination at the locality
C. latitude of the locality
D. angle of declination of the locality

View Answer & Discuss (6) JAMB 1986

1707

The sign of the change on a charged glass rod may be determined with

A. a charged electroscope
B. an uncharged electroscope
C. a galvanometer
D. an electrometer

View Answer & Discuss (6) JAMB 1986

1708

If the inclination at Ibadan is 7^oS, this means that

A. the angle between the geographic meridian and the magnetic meridian at Ibadan is 7^o
B. the earth's magnetic intensity at Ibadan makes angle 7^o with the horizontal direction
C. a magnetic needle will be inclined at 7^o to the vertical at Ibadan
D. the north pole of a magnetic needle dips downward at Ibadan

View Answer & Discuss (7) JAMB 1986

1709

The wavelength of ultraviolet radiation is 400nm. If the speed of light in air is 3 x 10\(^8\)ms\(^{-1}\), then the frequency of the ultraviolet radiation is