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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},"eq7Ki8TcEkomHoy5lCWo9yMTq2tR04","q","A man standing 300m away from the wall sounds a whistle. The echo from the wall reaches him 1.8sec. later, calculate the velocity of sound in air","ans",[414],1,"1991","course","physics","exp","V = \\(\\frac{2x}{t} = \\frac{2 \\times 300}{1.8}\\)
\n
\n
\n= 333.33ms^-1","opts",[422,423,424,425,426],"540.0ms^-1","333.3ms^-1","270.0ms^-1","166.7ms^-1","83.3ms^-1",37,"37","initComment","initReply","actionData","errors"]

WAEC - Physics (1991 - No. 37)

Explanation

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