Answer (4)
Sol.
Using work-energy theorem
work 
area under 
graph
From 
to 
From to 
Hence appropriate option is 
and 
An object of mass 
, initially at rest, is acted upon by a variable force whose X-component varies with 
in the manner shown. The velocities of the object at the points 
and 
, would have the respective values of (nearly) (1) 
and (2) and 
(3) and (4) and
, initially at rest, is acted upon by a variable force whose X-component varies with in the manner shown. The velocities of the object at the points and , would have the respective values of (nearly) (1) and (2) and (3) and (4) and 
. What is the speed of light in glass? Speed of light in vacuum is 
.
gives full scale deflection with a current of 
. The value of shunt, in order to convert it into an ammeter of 10 ampere range, will be 
emits maximum energy