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These resources are designed to help you familiarize yourself with the exam format, identify key topics, and practice effectively. Whether you're preparing for the May/June or GCE sessions, our curated materials provide both objective and theory questions to enhance your study sessions.","tags","waec nigeria west africa examination council","version","vip","location",{"_390":391,"_392":393},"type","Point","coordinates",[394,395],9.082,10.3671,"ng","priority",10,"createdOn",1755991949910,"updatedOn","questionsCount",27220,"courseCount",23,"examKey","questionData",{"_369":409,"_410":411,"_412":413,"_278":415,"_416":417,"_263":370,"_418":419,"_420":421,"_110":427},"bcLP5htZy89fLtVd9B2TESiiR6fnLD","q","A wire, 20m long is heated from a temperature of 5oC to 55oC. If the change in length is 0.020m, calculate the linear expansivity of the wire","ans",[414],2,"1991","course","physics","exp","\\(\\alpha = \\frac{\\Delta L}{L \\Delta \\theta} = \\frac{0.020}{20 \\times (55 - 5)} = 2.0 \\times 10^{-5}\\)","opts",[422,423,424,425,426],"1.0 x 10^-3k^-1","2.0 x 10^-4k^-1","2.0 x 10^-5k^-1","1.0 x 10^-5k^-1","2.0 x 10^-6k^-1",12,"12","initComment","initReply","actionData","errors"]

WAEC - Physics (1991 - No. 12)

Explanation

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