Which one of the following is not a dimensionless quantity?
Strain
Solid angle
Planck's constant
Dielectric constant
The dimensional formula of viscosity
[MLT-1]
[M1L-3T-1]
[ML-1T-1]
[ML-1T1]
"Pascal - second" has the dimensions of:
force
energy
pressure
Coeffecient of viscosity
The dimensional formula for frequency is
T
T-1
T-2
T2
The dimensional formula of resistance
[ML2T-3 A-1]
[ML2T-2A-1]
[ML2T-3A-2]
[M2L2T-3A-2]
Who formulated the laws of planetary motion?
Issac Newton
Johannes Kepler
Tycho Brahe
Albert Einstein
The time dependence of physical quantity p is given by p = p0 exp (-αt2), where α is a constant and t is the time.The constant α
is dimensionless
has dimensions[T-2]
has dimensions[T2]
has dimensions of p
One mole of an ideal gas at standard temperature and pressure occupies 22.4 L (molar volume).What is the ratio of molar volume to the atomic volume of a mole of hydrogen ?(Take the size of hydrogen molecule to be about 1 Å).
7 x 104
7 x 105
7 x 10-4
7 x 10-5
A Vernier Callipers with 1MSD = 1cm has 5 divisions as the vernier. The least count is
0.8 mm
0.8 cm
0.4 cm
0.5 cm
In a vernier callipers, one main scale division is x cm and n divisions of the vernier scale coincide with (n -1) divisions of the main scale.The least count (in cm ) of the callipers is :
(n - 1/ n)x
nx / (n -1)
x / n
x / (n -1 )
