To obtain a magnification of 2.5, how far should an object be placed from the pole of a thin converging lens of focal length 10.20m?

Question 1 Report

To obtain a magnification of 2.5, how far should an object be placed from the pole of a thin converging lens of focal length 10.20m?

0.13m

0.25m

0.28m

0.50m

Answer Details

v = 2.5u

F = $\frac{u v}{u + v}$

0.2 = $\frac{u \times 2.5 u}{u + 2.5 u}$

u = 0.28m

Read lesson note on Reflection Of Light At Plane And Curved Surfaces (JAMB)

Read lesson note on Simple A.C Circuits (JAMB)

Read lesson note on Electrostatics (JAMB)

Reflection Of Light At Plane And Curved Surfaces

Simple A.C Circuits

Electrostatics

View Answer

Download The App On Google Playstore

Everything you need to excel in JAMB, WAEC & NECO

Green Bridge CBT Mobile App

Personalized AI Learning Chat Assistant

Thousands of JAMB, WAEC & NECO Past Questions

Over 1200 Lesson Notes

Offline Support - Learn Anytime, Anywhere

Green Bridge Timetable

Literature Summaries & Potential Questions

Track Your Performance & Progress

In-depth Explanations for Comprehensive Learning