Physics
Grade-9
Easy
Question
Which out of these is both an advantage as well as a disadvantage?
- Produces heat
- Causes moving objects to stop
- Stopping vehicles
- All of the above
Hint:
Production of heat and stopping a moving object are some effects of friction that are both advantageous and disadvantageous.
The correct answer is: All of the above
- The effects of friction involve heating, stopping a moving object, and stopping vehicles.
- All these are advantageous in certain cases and disadvantageous in certain cases.
- The effect of friction depends on what way it is being used, for example heat produced during the working of a machine due to friction is disadvantageous but the same heat produced due to rubbing of hands on a cold day is advantageous.
Related Questions to study
Physics
______ of friction is seen in the image.
______ of friction is seen in the image.
PhysicsGrade-9
Physics
______ of friction is seen in the image.
______ of friction is seen in the image.
PhysicsGrade-9
Physics
______ of friction is seen in the image.
______ of friction is seen in the image.
PhysicsGrade-9
Physics
______ of friction is seen in the image.
______ of friction is seen in the image.
PhysicsGrade-9
Physics
______ of friction is seen in the image.
______ of friction is seen in the image.
PhysicsGrade-9
Physics
______ of friction is seen in the image.
______ of friction is seen in the image.
PhysicsGrade-9
Physics
“Machines get heated when they are operated for a long time.” The _______ aspect of friction is seen in this.
“Machines get heated when they are operated for a long time.” The _______ aspect of friction is seen in this.
PhysicsGrade-9
Physics
Which is the odd one out?
Which is the odd one out?
PhysicsGrade-9
Physics
Statement I: We can live very happily if friction is not present in nature.
Statement II: Airplane shape is streamlined to reduce frictional force.
Statement I: We can live very happily if friction is not present in nature.
Statement II: Airplane shape is streamlined to reduce frictional force.
PhysicsGrade-9
Physics
In which of the column are the activities categorized correctly according to the advantages and disadvantages of the role of friction in them?
In which of the column are the activities categorized correctly according to the advantages and disadvantages of the role of friction in them?
PhysicsGrade-9
Physics
______ of friction is seen in the image.
______ of friction is seen in the image.
PhysicsGrade-9
Physics
______ of friction is seen in the image.
______ of friction is seen in the image.
PhysicsGrade-9
Physics
In which of the column are the activities categorized correctly according to the advantages and disadvantages of the role of friction in them?
In which of the column are the activities categorized correctly according to the advantages and disadvantages of the role of friction in them?
PhysicsGrade-9
Physics
______ of friction is seen in the image.
______ of friction is seen in the image.
PhysicsGrade-9
Physics
______ of friction is seen in the image.
______ of friction is seen in the image.
PhysicsGrade-9
