A copper rod, 5m long when heated through 20c, expands by 1mm. If a second copper rod, 2.5m long is heated through 5c, by how much will it expand?

Assessment: JAMB UTME - Physics - 2019 Subject: Physics

Question 1 Report

A copper rod, 5m long when heated through 20c, expands by 1mm. If a second copper rod, 2.5m long is heated through 5c, by how much will it expand?
Answer Details

l 1  = 5m, ΔT = 10c, l 2  - l 1  = 1mm
l 1   = 2.5m, ΔT = 5c, l 2  - l 1  = ?

using α = l 2  - l 1 l 1 ΔT
15(10) = l 2  - l 1 2.5(5)
l 2 - l 2 = 2.5(5)5(10) = 14 = 0.25mm
Read lesson note on Temperature And Its Measurement (JAMB)
View Answer

Related Questions

1

The value of T in the figure above is
2

When blue and green colours of light are mixed, the resultant colour is
3

According to kinetic molecular model, in gases
4

Lamps in domestic lightings are usually in
5

A metal rod has a length of 100cm at \(200^\circ C\). At what temperature will its length be 99.4cm. If the linear expansivity of the material of the rod is ...
6

A train has an initial velocity of 44m/s and an acceleration of -4m/s\(^{2}\). Calculate its velocity after 10 seconds
7

If a body moves with a constant speed and at the same time undergoes an acceleration, its motion is said to be
8

The limiting frictional force between two surface depends on I. the normal reaction between the surfaces II. the area of surface in contact III. the relative...

Download The App On Google Playstore

Everything you need to excel in your exams

Green Bridge CBT Mobile App
Personalized AI Learning Chat Assistant
200,000+ Exam Questions Across IGCSE, JAMB, WAEC & NECO
Over 3,900 Lesson Notes
Offline Support - Learn Anytime, Anywhere
Green Bridge Timetable
Literature Summaries & Potential Questions
Track Your Performance & Progress
In-depth Explanations for Comprehensive Learning