When the glass rod is rubbed with silk, it acquires a positive charge. The behavior of charged objects depends on the principle of attraction and repulsion.
- Balloon 1 has a positive charge (which will repel the positively charged rod).
- Plastic sheet 1 has a negative charge (which will attract the positively charged rod).
- Balloon 2 has a negative charge (which will attract the positively charged rod).
- Plastic sheet 2 has a positive charge (which will repel the positively charged rod).
Thus, the glass rod will attract both Plastic sheet 1 and Balloon 2, but will not attract Balloon 1 or Plastic sheet 2.
However, since "Balloon 2 and Plastic sheet 1" is not one of the response options, we need to focus on the correct individual items. Since the only items that the positively charged glass rod will attract are Balloon 2 and Plastic sheet 1, we select:
Balloon 2 and Plastic sheet 1.
However, if this is not an option, let's clarify your options, as you may be missing the correct choice in your listing. Based on the given answers, "Balloon 2 and Plastic sheet 1" should ideally be the correct answer, but it’s not listed. Otherwise, select the most appropriate from the list as per the logic above, but note that it should include Balloon 2 and Plastic sheet 1.