Question

Write T against true and F against false in the following statements.

(a) Like charges attract each other (T/F)

(b) A charged glass rod attract a charged plastic straw (T/F)

(c) Lightning conductor cannot protect a building from lightning (T/F)

(d) Earthquakes can be predicted in advance (T/F)​

Answer 1

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a) False-Unlike charges attract each other while the like charges repel each other.

b) True-A charged plastic straw has a negative charge on its surface while the glass rod has positive charges on its surface. Unlike charges attract each other so, they both attract each other.

c) False -When lighting occurs, the atmospheric charges are transferred to the earth directly by a lightning conductor. Therefore the building is protected from lighting.

d) False-Even though the earthquake causes are known, there are no instruments that are invented to detect them in advance. Therefore earthquakes cannot be predicted in advance.

Answer 2

Explanation:

(a)Like charges attract each other (T)

(b) A charged glass rod attract a charged plastic straw (T)

(c) Lightning conductor cannot protect a building from lightning (F)

(d) Earthquakes can be predicted in advance (F)

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