Physical quantities are
  • quantities such as degrees, radians and steradians
  • quantities such as length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity
  • quantities such as pounds, dollars and rupees
  • quantities such as kilos, pounds and gallons
Which of the following pairs has the same dimensions?
  • specific heat and latent heat
  • lmpulse and momentum
  • surface tension and force
  • moment of lnertia and torque
The dimensions of kinetic energy is
  • [M 2L2T]
  • [ML 2T]
  • [ML 2T-2]
  • [ML 2T-1]
A force F is given by F = at + bt², where t is time. What are the dimensions of a and b?
  • MLT-1 and MLT0
  • MLT-3 and ML2T4
  • MLT-4 and MLT1
  • MLT-3 and MLT-4
The atmospheric pressure is 106 dyne/cm². What is its value in SI unit?
  • 105 newton/m²
  • 106 newton/m²
  • 104 newton/m²
  • 103 newton/m²
In a system of units if force (F), acceleration (A) and time (T) are taken as fundamentals units then the dimensional formula of energy is
  • FA2T
  • FAT2
  • FA2T
  • FAT
If force (F), work (W) and velocity (v) are taken as fundamental quantities. What is the dimensional formula of time (T)?
  • [WFv]
  • [WFv-1]
  • [W-1F -1v]
  • [WF-1v -1]
The dimensions of kinetic energy is same as that of
  • force
  • pressure
  • work
  • momentum
Which of the following groups have different dimensions?
  • Potential difference, EMF, voltage
  • Pressure, stress, Youngs modulus
  • Heat, energy, work done
  • Dipole moment, electric flux, electric field
ML-1T -2 is the dimensional formula of
  • magnetic induction
  • self-inductance
  • electric potential
  • electric field
What is the dimensional formula of magnetic field?
  • MT-2A-1
  • MT-1A-2
  • M-1L-2TA-1
  • M-1LTA-2
Electron volt is a unit of
  • charge
  • potential difference
  • energy
  • magnetic force
The volume of a cube in m³ is equal to the surface area of the cube in m². The volume of the cube is
  • 64 m³
  • 216 m³
  • 512 m³
  • 196 m³
In SI system the fundamental units are
  • meter, kilogram, second, ampere, Kelvin, mole and candela
  • meter, kilogram, second, coulomb, Kelvin, mole and candela
  • meter, Newton, second, ampere, Kelvin, mole and candela
  • meter, kilogram, second, ampere, Kelvin, mole and lux
Which one of the following represents the correct dimensions of the coefficient of viscosity?
  • [ML-1T-2]
  • [MLT-1]
  • [ML-1T-1]
  • [ML-2T-2]
A particle starting from the origin (0, 0) moves in a straight line in the (x, y) plane. Its coordinates at a later time are the path of the particle makes with the x-axis an angle of
  • 300
  • 450
  • 600
  • 0
Resolution is
  • a measure of the bias in the instrument
  • None of these
  • the smallest amount of input signal change that the instrument can detect reliably
  • a measure of the systematic errors
Absolute error of the measurement is
  • the difference between the individual measurement and the true value of the quantity cubed.
  • the difference between the individual measurement and the true value of the quantity squared.
  • the difference between two individual measurements and their mean
  • the difference between the individual measurement and the true value of the quantity
Which of the following units denotes the dimensions [ML2/Q2], where Q represents the electric charge?
  • Wb/m²
  • Henry(H)
  • H/m²
  • Weber(Wb)
Light year is a unit of
  • time
  • distance
  • sunlight intensity
  • mass
0 h : 0 m : 1 s

Answered Not Answered Not Visited Correct : 0 Incorrect : 0