Advertisements
Advertisements
Question
A charged glass rod attracts a charged plastic straw.
Options
True
False
Advertisements
Solution
This statement is True.
Explanation:
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.
APPEARS IN
RELATED QUESTIONS
Friction opposes the ______ between the surfaces in contact with each other.
Iqbal has to push a lighter box and Seema has to push a similar heavier box on the same floor. Who will have to apply a larger force and why?
When a glass rod is rubbed with a piece of silk cloth the rod ______.
Give three examples to illustrate that friction is a necessary evil.
Define sliding friction
Arrange the following in descending order:
- static friction
- sliding friction and
- rolling friction?
Fill in the blank.
.................... is the SI unit of force.
Answer the following in short.
Define force. Write its SI unit.
Fill in the blank.
Rolling friction offers ............. resistance than sliding friction.
Tick the most appropriate answer.
Force of friction comes into play when a/an
Tick the most appropriate answer
Friction always
Tick the most appropriate answer.
Friction is offered by
Tick the most appropriate answer.
Friction produces
State if the following statement is true or false. Correct the statement if it is false.
Friction has no relation with our walking or running.
State if the following statement is true or false. Correct the statement if it is false.
Friction is offered by all the three states of matter.
Answer the following in short.
Define rolling friction and give an example where rolling. friction comes into play.
Match the following.
| Column I | Column II | |
| a) | Static friction | Viscosity |
| b) | Kinetic friction | Least friction |
| c) | Rolling friction | Objects are in motion |
| d) | Friction between the liquid layers | Objects are sliding |
| e) | Sliding friction | Objects are at rest |
Explain how friction can be minimized.
Friction depends on the ______ of two surfaces in contact.
