If we select the unit of acceleration as 980cm/s2 and unit of velocity as 3x1010cm/s the unit of time will be
4.6x107s
3.6x106s
3.06x107s
4.66x107s
How many wavelength of Kr86 are there in one meter?
1650763.73
1560763.73
1065763.73
1560736.73
Which two of the following five physical parameters have the same dimensions?
(i) Energy density
(ii) Refractive index
(iii) Dielectric constant
(iv)Young's modulus
(v) Magnetic field
(ii) and (iv)
(iii) and (v)
(i) and (iv)
(i) and (v)
Mass of electron is 9.1x 10-31 kg. The order of magnitude of mass electron is
-31
-30
-32
-29
Which of the following has the dimensions of work?
Force
Velocity
Kinetic energy
Momentum
One light year is equal to
9.467x1015 m
9.467x1014m
9.467 x 10 16m
9.467x1010m
ML2T-2 is the dimensional formula for
Work
Power
Surface tension
The dimensional formula for permeability of free space,μ0 is
[MLT-2A-2]
[ML-1T2A-2]
[ML-1T-2A2]
[MLT-2A-1]
A LASER beam at moon returns after 2.56 s from moon.What is the radius of the orbit of moon (lunar orbit) around the earth?
3.84 x 108 m
3 x 108 m
3.84 x 104 m
3.84 x 1010 m
The radian is the unit of
Angle
Solid angle
Luminous intensity
Temperature
