A body is said
to have a uniform velocity, which of the following relation will hold for
average and instantaneous velocities?
a) average velocity is greater than the instantaneous velocities
b) instantaneous velocity is zero
c) Average velocity is zero
d) average velocity is equal to the
instantaneous velocity
If percentage is uncertain in force (F ) and area ( A) are 2% and 5 % respectively then what will be the percentage uncertainty in pressure (P) exerted by the force on the area ?
a) 2%
b) 5%
c) 7%
d) 3%
If fo is 10m and fe is 0.1m so what will be magnification of refracting telescope?
a) 100m
b) 100
c) 10
d)10m
A cable break
if stretched by more than 2mm. it is cut into two equal parts. how much either
part can be stretched without breaking?
a) 25m
b) 10mm
c) 0.522
d) 1mm
