Question

To sharpen the blade of a knife by rubbing it against a surface, which of the following will be most suitable?
(a) stone
(b)plastic block
(c)wooden block
(d)glass block ​

Answer 1

Answer: a) stone

Explanation: Stone will be more suitable because it will exert greater reaction and hence greater friction force which sharpen the blade of a knife easily by rubbing.

Answer 2

Answer:

stone is the qnswer............