Question

15. A matchbox containing an unknown object is placed
on a thin sheet of glass in the experimental set-up
shown in the figure.
Retort
stand
Match box
Thin glass
Bar sheet
magnet
When the bar magnet moves, it is able to drag the
match box along the magnet. What is most likely to
be found in the matchbox?
A. Marble
B. Toothpick
C. Copper coin
D. Steel ball bearing​

Answer 1

Answer:

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