There are 20 divisions in 4 cm of the main scale. The vernier scale has 10 divisions. The least count of the instrument is
Electron volt is a unit of
The equation of state of some gases can be expressed as Vander wal equation i.e.
(P + a/v2)(V – b) = RT
Where P is the pressure, V is the volume, T is the absolute temperature and a, b, R are
constants. The dimensions of ‘a’ are:
Which of the following pairs has the same dimensions?
Answer: Impulse and Momentum
One watt hour contains how many joules?
At 4° C, the density of water is equal to
The dimensions of Kinetic energy is same as that of
The surface tension of a liquid is 70 dyne/cm. In MKS system its value is?
The dimensional formula for Planck’s constant is
Light year is a unit of
What is the unit for measuring the amplitude of a sound?
One fathom is equal to
Light year is a measurement of
Answer: Stellar distances
One kilometer is equal to how many miles?
'Bar' is the unit of
Answer: Atmospheric pressure
Nautical mile is a unit of distance used in
How many Dynes are there in 1 gram weight?
Joule is the unit of
[ML-1T-2] is the dimensional formula of
Answer: modulus of elasticity
The dimensional formula of coefficient of viscosity is