Question

Identify explain the property possessed by substances which leads to following the process
1. A balloon can be stretched
2. An Iron nail can be made pierce a wall without breaking it
3. During the rainy season water flows down the slope of of roof​

Answer 1

Answer:

2.

Q.1. Which of the following cannot be charged easily by friction?

(a) A plastic scale

(b) A copper rod

(c) A inflated balloon

(d) A woollen cloth.

Ans. (b) A copper rod.

Q.2. When a glass rod is rubbed with a piece of silk cloth the rod:

(a) and the cloth both acquire positive charge.

(b) becomes positively charged while the cloth has a negative charge.

(c) and the cloth both acquire negative charge.

(d) becomes negatively charged while the cloth has a positive charge.

Ans. (b) becomes positively charged while the cloth has.a negative charge.