Which of the following pairs have the same unit ?
The dimensional formula
If F is the force , x is the distance and t is the time then in the relation F = a
x
+ bt
2
, the dimensions
of a/b is
If the unit of force and length each is increased by three times , the unit of energy increase by
Plancks costant has the dimensions of
If the percentage errors in the measurements of mass and length are 3% and 2%, the maximum error in the determination the density of a cube is:
If the velocity of light is taken as the unit of velocity and year as the unit of time then the unit of length will be :
Which of the following is the smallest unit of length ;
The work done in compressing a spring through a length x is given by W = 1/2 k x
. Then the dimensions
of k is :
If the unit of force one kilo-Newton , the unit of length is one km and the unit of time is 100 sec,then the unit of mass will be ;