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 attracts 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)
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 attracts 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)
(a)
False
Like
charges repel each other. It is the unlike charges that attract each
other.
(b)
True
A
charged glass rod has positive charges on
its surface while a charged plastic straw has negative charges on its
surface. Since unlike charges attract each other, a charged glass rod
attracts a charged plastic straw.
(c)
False
During
a lightning, the lightning conductor
conducts all the atmospheric charges to the Earth directly, leaving
the building safe. Hence, lightning conductors protect a building
from lightning.
(d)
False
Although
the causes of earthquakes is known, but no
instrument could be invented to detect it till now. Hence,
earthquakes cannot be predicted in advance.
(a) False
Like charges repel each other. It is the unlike charges that attract each other.
(b) True
A charged glass rod has positive charges on its surface while a charged plastic straw has negative charges on its surface. Since unlike charges attract each other, a charged glass rod attracts a charged plastic straw.
(c) False
During a lightning, the lightning conductor conducts all the atmospheric charges to the Earth directly, leaving the building safe. Hence, lightning conductors protect a building from lightning.
(d) False
Although the causes of earthquakes is known, but no instrument could be invented to detect it till now. Hence, earthquakes cannot be predicted in advance.
