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)
The angle subtended by a satellite by the two directions of observation is 2.552 x 10-2 rad.If the diameter of earth is 1.276 x 107m. What is the distance of the satellite from the earth?
6 x 108 m
5 x 108m
2.5 x 108m
4 x 108m
900 is equal to how many radians?
1.57 radians
1.75 radians
3.14 radians
2.57 radians
Turpentine oil is flowing through a tube of length l and radius r.The pressure difference between the two ends of the tube is p.The viscosity of the oil is given by
η = p(r2-x2) / 4vl
where v is the velocity of oil a distance x from the axis of the tube.The dimensions of η are
[M0L0T0]
[MLT-1]
[ML2T-2]
[ML-1T-1]
The dimensional formula of gravitational constant G is
[MLT2]
[M-1L3T-2]
[M2L-1T2]
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
One astronomical unit is
6.024 x 1226 m
9.46 x 1015m
1.496 x 1011m
1.58 x 105m
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
If 'King' times displacement is the work. What is the dimension of 'King'?
MLT-1
MLT-2
M2LT-2
M-1 LT-1
Which law of thermodynamics leads to the concept of temperature?
Zeroth law
First law
Second law
Both '1' and '2'
