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There are four light weight rod samples ...

There are four light weight rod samples A,B,C and D separately suspended by thread. A bar magnet is showly brought near each sample and the following observations are noted

A

`++-+O+`

B

`+-++O`

C

`+-+OO`

D

`-+-OO`

Text Solution

Verified by Experts

The correct Answer is:
C
From (i) A and C both are charged, eithe positively or negatively. From (ii) B is charged and D and E have no charge. From (iii) A is postively charged. Therefore from Eq. (i) B is negatively charged.
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