The number of electrons that would weigh 9.11 kg is
1019
1027
1031
1030
If an instrument gives nearly equal values in repeated measurements, it possess
Accuracy
Precession
Both accuracy and precession
Sensitivity
The dimensional formula for Young's modulus is:
[ML-1T-1]
[M0LT-2]
[ML2T-2]
[MLT-2]
The volume of a cube of side 1 cm is equal to _____ m3.
106
10-6
105
10-5
Turpentine oil is flowing through a tube of length l and radius r.The pressure difference between the two ends of the tube is p.The viscosity of the oil is given by
η = p(r2-x2) / 4vl
where v is the velocity of oil a distance x from the axis of the tube.The dimensions of η are
[M0L0T0]
[MLT-1]
The sides of a rectangular lamina are (8.5 ± 0.2) cm and (5.6 ± 0.1) cm.Calculate the perimeter of the lamina with error limits.
(28.2 ± 0.6) cm
(2.82 ± 0.6) cm
(2.82 ± 6.0) cm
(28.2 ± 6.0) cm
An icecube of density 900 kg/m2 is floting in water of density 1000 kg/m3.The percentage of volume of ice-cube outside the water will be :
20 %
35 %
10 %
25 %
How many amu would make up 1 kg?
6. 024 x 1026 amu
1.6 x 1017 amu
9.11 x 1027 amu
8.852 x 10 12amu
Which of the following ratios is dimensionless?
Work/Power
Work/ Energy
Momentum / Power
Momentum/Energy
The dimensional formula for surface tension is
[ML-1T-2]
[M1L0T-2]