The ratio of the dimensions of Planck's constant and that of the moment of inertia is the dimension of
frequency
velocity
angular momentum
time
The maximum and minimum temperatures at a place are(40.6 ± 0.3)°C and (32.4 ± 0.2)°C.Calculate the difference in the temperatures with error limits.
(8.2 ± 0.5)°C
(8.0 ± 5.0)°C
(8.2 ± 5.0)°C
(8.0 ± 0.5)°C
The number of significant figures in 0.007m2 is
1
2
3
4
The dimension of Plank's constant is same as that of:
linear momentum
energy
power
Find the number of times the heart of a human being beats in 10 years.Assume that the heart beats once in 0.8 sec.
3.942 x 108 beats
3.942 x 103 beats
3.942 x 1010 beats
3.942 x 1012 beats
If the dimensions of a physical quantity are given by MaLbTc ,then the physical quantity will be
pressure if a = 1,b = -1,c = -2
velocity if a = 1,b = 0,c = -1
acceleration if a = 1,b = 1,c = -2
force if a = 0,b = -1,c = -2
Curie is the unit of :
Half-life period
Decay constant
Radioactivity
Nuclear force
The error in the measurement of radius of a sphere is 0.4%.Find the permissible error in the surface area.
8%
0.8%
7%
none of these
The number of significant figures in 200.01 are
5
6
If an instrument gives nearly equal values in repeated measurements, it possess
Accuracy
Precession
Both accuracy and precession
Sensitivity