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WorksheetsGRADE VII CDF EXAM
Total questions: 16
Worksheet time: 8mins
The Force which ------------ to the relative motion
opposes
same
both 1 and 2
none
----------------------- is the force acting normal to the surface of the body in outward direction
Normal force
Normal reaction
friction
applied force
---------------- is the force of friction acting on the body ,when its in rest position or some force is being on it
kinetic friction
static friction
both 1 and 2
none
the maximum value of static friction is -----------------
limiting friction
kinetic friction
static friction
both 1 and 2
the force of friction which opposes when the body in motion on the surface of another body, the force of friction acting between two surfaces is called ---------- friction
limiting
static
kinetic
all the above
The force friction which comes into play between two surfaces ,when one tends side over the other is called-----------
rolling
sliding
rotating
none
The force of friction which comes into play between two surfaces, while one is rolling over other is called---------------
Rolling
Static
Rotating
kinetic
The magnitude of limiting friction f is ---------------- to the magnitude of the normal reaction( R) between the two surfaces in contact ..
inversionaly proportional
Directly proportional
both 1 and 2
all the above
A substance which flow is called --------- liquids and gases are considered as-----
solids ,liquids
fluids ,fluids
gases
solids solids
If the part of the fluid is replaced by another object of same volume irrespective of material ,then the ------------- force remains same
buoyant
attraction force
down wards
normal
Buoyant force =
Weight of solid displaced by object
Weight of fluid displaced by object
both 1 and 2
none
Let m mog is the weight of the bogy and mfg is the buoyant force
m0g =B
then the body floats
then the body sinks
then the body suspends
both 1 and 2
Mog <B
THEN THE BODY FLOATS
THEN THE BODY SINKS
THEN THE BODY SUSPENDS
ALL THE ABOVE
M0g >B ,
THEN THE BODY SINKS
THEN THE BODY SUSPENDS
BOTH 1 AND 2
NONE
When a body is in motion in the fluid then three develops an opposing force which opposes the motion of the body by the fluid .this force is called -------------
no viscous
viscous drag
friction
all the above
------------------ states that for every action there exists equal and opposite reaction
Newton IInd law
Newton IIIrd law
Newton Ist law
none
