A simple magnifying glass is used to view an object. At what distance from the lens must the object be placed so that an image 5 times the size of the object is produced 20cm from the lens?

JThomson

6 years ago

Magnification, M=V/U
5=20/U
5U=20
U=20/5
= 4cm

Hermes2005

3 years ago

They're asking for object distance.
Image distance is 20cm, Magnification is 5.
Magnification = image distance/object distance
Object distance = image distance/magnification = 20 / 5 = 4cm.

mathemagic

9 years ago

please clarify better. Your answer and solution is confusing.

EMMABROMINE

12 years ago

Hw did you get the 20 pls

kamsi

11 years ago

your answer is confusing pls

simris

4 years ago

its 100 naw

darkypearl

12 years ago

even d ans is wrng, d cal gave 100 ,nd 4 was choosen

regony600

9 years ago

Incomplete question