Question

b) Two identical bar magnets A and B are kept on a table. One pole on A is marked as
'north'. Explain the procedure you will use to identify all the other poles on both the
mannets​

Answer 1

lAs we can see from the diagram that amount of iron filings in A is greater than B and C and in 8, it is greater than C. So, the strength of magnets will be according to the amount of iron filings sticking to them only.

Answer 2

Explanation:

Károly Ereky

Károly Ereky (German: Karl Ereky; October 20, 1878 – June 17, 1952) was a Hungarian agricultural engineer. The term 'biotechnology' was coined by him in 1919. He is regarded by some as the "father" of biotechnology.