GENERAL INSTRUCTIONS (Please read the following instructions very carefully)
1. Question marks are mentioned with each Question.
2. Please write neat and clean hand-writing on Answer Sheet. Use Margin on right side and left side of Answer Sheet.
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4. Do not click the button Submit Test before completing the paper on Answer Sheet.
5. This is a ONE TIME attempt test. Once started, it cannot be reversed or attempted again.
6. Take photo of all the Sheets and make single pdf file.
1
Treading of tire is done to _________________.
Increase friction
Reduce friction
Get more mileage
Drive comfortably
2
If the roughness of a surface is increased to a large extent, then the friction of the surface would ______________________.
increase and then decrease
increase continuously
decrease continuously
3
Which type friction offers least resistance ?
Static friction
Rolling friction
Sliding friction
None of the above
4
Sliding friction is _____________ than/ to rolling friction.
Smaller
Greater
Equal
5
What is the main use of spring balances ?
to weigh heavy loads such as trucks, storage silos etc.
to move objects from one place to other
to decrease friction between the objects.
6
Liquids and gases also exert friction on the bodies moving through them. However, they offer _____________ friction as compared to solid surfaces.
more friction
less friction
no effect on friction
No change in the value of friction
7
Fluid friction depends on the ____________________ .
Shape of object
Nature of object
Depends upon space between the particles of an object
Both I and II
8
Force of friction does not depend on _______________ .
Nature of two surfaces
Weight of the object
Irregularities between the surfaces
Surface area of the object
9
Disadvantage of friction _______________ .
It allows us ti hold a pen
It helps us to sandpaper a table
It wear out our shoes
None of these .
10
What makes the boy slip on the ground due to soap solution ?
The friction has increased due to the soap solution.
The surface has become smooth and the friction has reduced due to the soap solution.
It is just a coincidence
11
The fluid friction increases with __________________________.
increase in area of contact
decrease in area of contact
increase in temperature
Both A and B
12
Friction depends on the ________________________.
Area of contact
Mass of body
Nature of the surface in contact
All of these
13
A spring balance measures the weight of an object by ___________.
opposing the force of gravity
moving in the direction of gravity
not measuring force of gravity
14
Which of the following force is a Self adjusting force ?
Rolling Friction
Sliding Friction
Static Friction
Non contact Forces
15
Consider a vehicle going on a horizontal road towards east. Neglect any force due to air. The frictional force on the vehicle by the road _________________ .
Is towards east if the vehicle is accelerating
Is zero if the vehicle is moving with a uniform velocity
Must be towards east
Must be towards west.