The dimension of Plank's constant is same as that of:
linear momentum
angular momentum
energy
power
One meter = ______AU
6.67 x 10-12AU
1.58 x 10-5 ly
4.86 x 10-6 AU
1.057 x 10-10 ly
If σ = surface charge density,ε = electric permeability,the dimensions of σ/ε are same as
Electric force
Electric field intensity
Electric charge
Pressure
Candela is the unit of:
temperature
electric potential
luminous intensity
The number of significant figures in 0.00097 are
5
4
6
2
The force F on a sphere of radius r moving in a medium with velocity v is given by F = 6π ηrv.The dimensions of η are
[ML-3]
[MLT-2]
[MT-1]
[ML-1T-1]
The dimensional formula of viscosity
[MLT-1]
[M1L-3T-1]
[ML-1T1]
The dimensional formula of heat is:
[ML2T-2 ]
ML-1T-1
If force F, velocity v and time T are chosen as the base units then the dimension of mass is terms of these are
FVT-2
FV-1T
FV-1 T-1
FVT
In an experiment the angles are required to be measured using an instrument.29 divisions of the main scale exactly coincide with the 30 divisions of the vernier scale.If the smallest division of the main scale is half - a - degree (= 0.5°), then the least count of the instrument is
one minute
half minute
one degree
half degree
