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rocker harshil from TImpany senior secondary school, Visakhapatnam
Subject :NSO    Class : Class 6

A matchbox containing an unknown object is placed on a thin sheet of glass in the experimental set-up shown in the figure.

When the bar magnet moves, it is able to drag the match box along. What is most likely to be found in the matchbox?

A Marble
B Toothpick
C Ten-cent coin
D Steel ball bearing


the match box should certainly contain something magnetic as, when the bar magnet is moved then the match box is also dragged along with it .

Ans 1:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
Ya Sharmi is correct, ten-cent coin is also always magnetic

Ans 2:

Sharmi Chowdhury from G.D Birla Centre For Education , Kolkata
Class : Class 7
Isn't a ten-cent coin also magnetic?

Ans 3:

Tamrashi Pani from National Public School, Bangalore
Class : Class 8
Yes it is... yet a steel ball bearing is the best option

Ans 4:

Ashwak from Cambridge, Jalandhar
Class : Class 8
Yes steel ball bearing is the best option ....... but i think ten cent coin is also magnetic ... but let it be option A {STEEL BALL BEARING}

Ans 5:

Ayush Chauhan from Modern Public School, Bhiwadi
Class : Class 9

Ans 6:

Mihika Raut from ST JOSEPHS SCHOOL, RIHAND NAGAR
Class : Class 8
steel ball bearing is a conducter that is why it is able to drag the box with it.

Ans 7:

ATHARV RAHUL MAHAJAN from ST. STEPHENS SCHOOL CHANDIGARH, SAS NAGAR
Class : Class 6
Steel is not a magnetic material

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