Boojho kept a magnet close to an ordinary iron bar. He observed that the iron bar attracts a pin as shown in Fig. 13.7.


The iron bar can be used as a magnet as it has induced some magnetic properties from the bar magnet present there. The pin cannot be used as a magnet as it has very small area and as it is not in direct contact with the magnet, the magnetic strength is very less. Therefore it cannot induce magnetic properties.


Steps to show that they have/have not induced magnetic properties are:


● Place the iron bar & pin on the table just after it is being separated from the magnet.


● Now use iron fillings and spread it over the iron bar and the pin.


● We will infer that iron bar attracts some iron fillings but not the pin.


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