A satellite is moving on a circular path of radius r around the earth has a time period T.If its radius slightly increases by Δr,the change in its time period is
3/2(T/r)Δr
2/3(T/r)Δr
3/2(T2/r2)Δr
None of these
In a vernier callipers N divisions of vernier scale coincide with N - 1 divisions of main scale (in which length of one division is 1 mm).The least count of the instrument should be
N
N - 1
1/10N
1/(N - 1)
If x = at +bt2 ,where x is the distance travelled by the body in kilometer while t is the time in second,then the unit of b is
km/s
km s
km/s2
km s2
"Pascal - second" has the dimensions of:
force
energy
pressure
Coeffecient of viscosity
Chandrasekhar Limit is the unit of:
Distance
Time
Intensity
Mass
The dimensional formula for surface tension is
[MLT-2]
[ML-1T-2]
[MLT-1]
[M1L0T-2]
The dimensional formula of angular momentum is
MLT-2
ML-1T-
M1L2T-1
MLT-1
Light year is a unit of:
Speed
If an instrument gives nearly equal values in repeated measurements, it possess
Accuracy
Precession
Both accuracy and precession
Sensitivity
A certain body weighs 22.42 g and has a measured volume of 4.7 cc.The possible error in the measurement of mass and volume are 0.01 g and 0.1 cc.Then maximum error in the density will be
22%
2%
0.2%
0.02%