Specimen | Number of nails picked up | Number of nails retained by the specimen |
X | 35 | 4 |
Y | 20 | 10 |
Z | 40 | 3 |
A) X
B) Y
C) Z
D) All of these.
Correct Answer: C
Solution :
Material Z has picked up more number of nails and has retained less number of nails. So, it will be a best electromagnet.You need to login to perform this action.
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