Which of the following is a dimensional constant?
Refractive Index
Poisson's ratio
Relative density
Gravitational Constant
Curie is the unit of
Half-life period
Decay constant
Radioactivity
Nuclear force
Which of the following is a more accurate measuring instrument?
Metre Scale
Vernier Calipers
Screw Gauge
Both (2) and (3)
In SI system of unit, the unit of pressure is
bar
dynes per square cm
pascal
torr
The SI unit of force is
dyne
newton
joule
Which of the following is a dimensionless quantity?
Angular frequency
Stress
Strain
Surface Tension
One parallactic second is equal to
9.4605 × 1015 m
3.084 × 1016 m
6.67 × 10-11 m
3 × 108 m
The most accurate time measurement device is
Quartz clock
Electrical Oscillations
Caesium atomic clock
Seconds pendulum
Chandrasekhar Limit is the unit of
Distance
Time
Intensity
Mass
The angle 1°54' is equal to
2.91 × 10-4 radian
3.32 × 10-2 radian
1.21 × 10-6 radian
None of these
