section-a
section-b
section-c
section-d
section-e
100
force
S.I unit of thrust is same as that of_.
100
Archimedes' principle
On what principle is this device based?
100
Relative density.
what is the ratio of density of substance to that of water?
100
Sea water
Where is it easier to swim -in fresh water or seawater?
100
Nm or joule
state the SI unit of work
200
perpendicular
Thrust is the force acting_to the surface.
200
A person pushing a cartwheel and etc.
Give one example of positive work done?
200
Work done by gravity on object thrown forward and etc.
Give one example of zero work done?
200
0.001
1 joule is equal to how many kilojoules?
200
P=w/t
how is work done related to power of a device?
300
pressure
Thrust=_* area
300
Kilowatt hour
What is the commercial unit of energy?
300
Zero
What is the work done by a satellite revolving around the earth?
300
Power
What is the rate of energy consumption by a device called?
300
increases
When a spring balance is stretched,its potential energy?
400
pascal
1 n/m^2 =1 _
400
Dry cell
Name a device which converts chemical energy to electrical energy?
400
Atmospheric pressure
What is the pressure exerted by atmosphere on us called ?
400
To find density of water.
What is the use of hydrometer?
400
weight and upthrust
Name the forces which act on an object immersed in a fluid?
500
increased
area of contact should be_ to reduce pressure on a surface
500
chemical to electric
State energy conversion occurring in an electrochemical cell?
500
due to air resistance
A feather falls slowly through air.why?
500
Its weight is less than upthrust exerted by water.
Why does a cork not sink in water ?
500
Lactometer
Name the device used to measure purity of a given sample of milk?
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