Question

Describe an experiment to suggest that magnetic force is non-contact force....

Answer 1

Procedure -Take a magnet and bring it near iron nails.
Observation - U will observe that the nails are attracted by the magnet. 
Result - It shows that magnetic force is non-contact force.
Precaution - Magnet is not touching the nails. 

Answer 2

Answer:

procedure - take a magnet and bring it near iron nails

observation - u will observed that the nails are attracted by the magnet

result-oriented it shows that magnetic force is non contact force

precaution - magnet is not touching the nails