The dimension of light year is:
LT-1
L
LT-2
T-1
One Fermi is equal to:
10-7m
10-8m
10-15m
10-10m
The dimensional formula of angular momentum is
MLT-2
ML-1T-
M1L2T-1
MLT-1
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)
SI unit is
Rational
Coherent
Metric
All of the above
In SI system of unit,the unit of pressure is
Atmosphere
Dynes per square cm
Pascal
torr
Mass of electron is 9.1 x 10-31 kg. The order of magnitude of mass of electron is
-31
-30
-32
-29
The most accurate time measurement device is:
Quartz clock
Electrical Oscillators
Caesium - atomic clock
Seconds Pendulum
If an instrument gives nearly equal values in repeated measurements, it possess
Accuracy
Precision
Both Accuracy and Precision
Sensitivity
According to Kepler's law the square of the time period of a planet is proportional to the
Cube of the semi minor axis
Square of the semi major axis
Square of the mean radius
Cube of the semi major axis