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A piece of rubber 10cm long stretches 6mm when a load of 100N is hung...

Physics
JAMB 1978

A piece of rubber 10cm long stretches 6mm when a load of 100N is hung from it. What is the strain?

  • A. 60
  • B. 6
  • C. 6 x 10-2
  • D. 6 x 10-3
  • E. 0.6
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Correct Answer: Option C
Explanation

Strain = \(\frac{\Delta L}{L}\)

Extension produced = 6mm or 0.6cm

Original length = 10cm

= \(\frac{0.6}{10}\)

= 0.06 or 6 x 10\(^{-2}\)

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WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 127076
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 127076
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts