JAMB 2026 Physics Questions and Full Solutions.

Good day, students!
In today’s tutorial, we’re reviewing some important Physics questions that are likely to appear in JAMB 2026. Each question is broken down step-by-step to help you understand the concepts and formulas used — not just memorize answers.

Let’s jump right in!

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You can watch the full class in the video below:

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https://www.youtube.com/watch?v=32PAYwsKcow&pp=0gcJCb4JAYcqIYzv

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Question 1: Calculating Stress on a Loaded Wire

Question:
A wire with diameter y meters is loaded with a weight of y² newtons. What is the stress experienced by the wire?

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Physics Concept:

Stress is defined as: Stress=ForceArea\text{Stress} = \frac{\text{Force}}{\text{Area}}Stress=AreaForce​

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Step-by-Step Solution

Given:

• Force (weight) = y2y^2y2
• Diameter = yyy
• Radius = y2\frac{y}{2}2y​
• Area = πr2=π(y2)2=πy24\pi r^2 = \pi \left(\frac{y}{2}\right)^2 = \frac{\pi y^2}{4}πr2=π(2y​)2=4πy2​

Now calculate stress: Stress=y2πy24=y2×4πy2\text{Stress} = \frac{y^2}{\frac{\pi y^2}{4}} = \frac{y^2 \times 4}{\pi y^2}Stress=4πy2​y2​=πy2y2×4​

Cancel out y2y^2y2 on top and bottom: Stress=4π\text{Stress} = \frac{4}{\pi}Stress=π4​

Final Answer: 4π N/m2\boxed{4\pi \, \text{N/m}^2}4πN/m2​

Correct Option: C

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Question 2: When Is Work Actually Done?

Question:
Under which of the following conditions is work done?

Options:

A) A man supports a heavy load on his head with his hands
B) A woman holds a pot of water
C) A boy climbs onto a table
D) A man pushes against a wall

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Physics Explanation:

In physics, work is done when a force causes displacement in the direction of the force.

• A and B involve holding something without movement → No work done
• D involves pushing with no displacement → No work done
• C involves climbing (vertical movement against gravity) → Work is done

Correct Answer: C – A boy climbs onto a table

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JAMB Physics Insight

These two questions combine Elasticity and Mechanics — both key JAMB Physics syllabus topics. Here's why they matter:

• Elasticity (Stress and Strain): Teaches how materials behave under force
• Mechanics (Work, Energy): Core topic that connects everyday actions to Physics formulas

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Watch more educational videos and past questions: https://youtube.com/@allcbts

Exam Tip for JAMB 2026 Physics

Always remember: In Physics, conceptual understanding beats memorization.

You should be able to:

• Identify which formulas apply
• Know when to cancel units or terms
• Recognize where work is or isn’t done

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