1)When the density of the floating body is equal to the density of the liquid then
a)the mass of the body is greater than mass of the liquid displaced
b) the volume of the body is equal to the volume of the liquid displaced
c)the volume of the body is greater than the volume of liquid displaced
d) the mass of the body is lesser than the mass of the liquid displaced
2) A wire of 15ohm is drawn out so that it length is increased twice its original length. Calculate its new resistance.
a) 7.5ohm b)15 ohm d)30 ohm d) 60ohm.
3)200 effort is used to lift 300N load by using two-wheel pulley system. What is its V.R.?
a) 1.5
b)2/3
c)4.5
d)2
4) Cell of emf. 10 volt is connected across a resister having the specific resistivity of 4 ohm metre and length 6m with a cross section area of 1m^2. Find the current? a)0.5A 6) 0.75A c)0.25A d)1A
5) Calculate the work done in pushing a cart through a distance of 150m against frictional force of 75N?
a) 11350 joules b)12250 joules c) 1175 joules d)11250 joules
