1kgf =
1 N
105 dyne
10 N
None of these
Hot air and hot liquid has the tendency to rise up, this is called
Convection
Radiation
Induction
The characteristics of a true beam balance are
Both the arms must be of equal length
Both the pans must be of equal masses
On lifting up the beam balance, the rod should be horizontal and pointer vertical
All of the above
Relative density is the ratio of the density of the substance to the density of water at
0°C
1°C
5°C
4°C
Mass is measured by a
beam balance
spring balance
physical balance
Both a and c
A piece of iron sink in water and float in mercury because
Iron is heavier than water but lighter than mercury
Iron is lighter than water but heavier than mercury
Density of water is more than Iron
All of these
The S.I unit of mass
Kilogram
Newton
Newton - Meter
Gram
Unit of relative density is
g cm-3
g cm2
g m-3
No unit
Floating and Sinking of an object depends upon
Density of the object and liquid in which it floats
Mass of the object and volume of the liquid
Density of the object and volume of the liquid
Both a and b
Practical applications of convectional current is/are
ventilators constructed at top of the walls
cooling unit in a fridge is fitted at the top
Air conditioner in a room at some height
