Examkits is a JAMB CBT practice platform that provides over 20 years of past questions, Post UTME questions, and detailed video solutions to help students prepare for their exams.

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You can practice JAMB past questions online, on Android, or on a desktop using the Examkits app. Just register on our website and choose your preferred device.

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Yes. Our Android and Windows versions support offline usage. Once downloaded and activated, no internet is required to use most of the features.

Do you offer video solutions for JAMB questions?

Yes, Examkits provides detailed video explanations for all JAMB past questions from 2000 to 2024, helping students understand how to solve each problem.

Examkits offers free practice for some subjects. However, full access requires a one-time affordable activation fee for each version of the app.

PHYSICS

JAMB 2012 - Question 14

Physics 2012 JAMB Past Questions - Question 14: A block and tackle is used to raise a load of 250N through a vertical distance of 30m .What is the efficiency of the system if the work done aganist friction is 1500J?

Choose the correct answers from the options given.

A block and tackle is used to raise a load of 250N through a vertical distance of 30m .What is the efficiency of the system if the work done aganist friction is 1500J?

A: 62.5%

B: 73.3%

C: 83.3%

D: 94.3%

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PHYSICS

Physics 2012 JAMB Past Questions - Question 14: A block and tackle is used to raise a load of 250N through a vertical distance of 30m .What is the efficiency of the system if the work done aganist friction is 1500J?

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Correct Answer

Explanation