Einstein was awarded noble prize for
Theory of relativity
Photoelectric effect
General theory of relativity
None of the above
What is the no of significant numbers in (3.20 + 4.80) x 10^{5}
5
4
3
2
1Hz=
2Π rad s^{-1}
Π rad s^{-1}
rad s^{-1}
s^{-1}
Given that 'C' is the speed of light. A laser signal sent towards the moon returns after 't' seconds. The distance of the moon from the observer is
ct^{-1}
ct
ct/2
ct^{-2}
One kilo meter is equal to
10^{3}mm
10^{6}mm
10^{9}mm
10^{12}mm
Which of the following is not a branch of physics?
Mechanics
Statistics
Dynamics
Optics
Given force of (F) is given by F = Pt^{-1} + Qt where 't' is time. The unit of P is same as that of
accleration
momentum
velocity
displacement
Which of the following is dimensionless quantity.
Gravitational constant
Molar gas constant
Relative Density
Relative velocity
Which of the following is not the name of physical quantity.
Kilogram
Impulse
Energy
Density
If force = nx velocity, What is the dimensional formula of n
M^{0}L^{0}T^{0}
MLT^{0}
MLT ^{-1}
ML^{0}T ^{-1}