One Parallactic second is equal to:
9.4605 x 1015m
3.084 x 1016m
6.67 x 10-11 m
3 x 108 m
Dimension of relative density is :
[M3L2]
[M-2L-3]
Dimensionless
[M2L-5]
Which of the following has the dimensions of work?
Force
Velocity
Kinetic energy
Momentum
How many significant figures are present in the expression 0.009m ?
3
2
1
4
One amu is equal to
1.66 x 10 -27 kg
1.66 x 10-24 kg
1.66 x 10-31 kg
1.66 x 10-19 kg
One Fermi is equal to:
10-7m
10-8m
10-15m
10-10m
The wave used in SONAR is
Radio wave
Ultrasonic wave
Light wave
Electric pulse
The density of a cube is measured by measuring its mass and length of its sides.If the maximum error in the measurement of mass and length are 4% and 3% respectively,the maximum error in the measurement of density will be
7%
9%
12%
13%
Which one of the following is not a dimensionless quantity?
Strain
Solid angle
Planck's constant
Dielectric constant
ML2T-2 is the dimensional formula for
Work
Power
Surface tension