31 Year NEET Previous Year Questions: Units & Measurement - NEET MCQ

Dimensional formula of self inductance is [1989]

Of the following quantities, which one has dimension different from the remaining three? [1989]

If x = at + bt², where x is the distance travelled by the body in kilometers while t is the time in seconds, then the units of b is [1989]

According to Newton, the viscous force acting between liquid layers of area A and velocity gradient ΔV/ΔZ is given by where η is constant called coefficient of viscosity. The dimensional formula of η is [1990]  

The frequency of vibration f of a mass m suspended from a spring of spring constant k is given by a relation of the type f = c m^x k^y, where c is a dimensionless constant. The values of x and y are 

The dimensional formula of pressure is [1990]

The dimension al formula for permeability µ is given by [1991]

A certain body weighs 22.42 gm and has a measured volume of 4.7 cc. The possible error in the measurement of mass and volume are 0.01 gm and 0.1 cc. Then maximum error in the den sity will be [1991]

P represents radiation pressure, crepresents speed of light and Q represents radiation energy striking unit area per sec. The non zero integers x, y, z such that P^x Q^y c^z is dimensionless are [1992]

The time dependence of a physical quantity p is given by p = p₀ exp (– αt²), where α is a constant and t is the time. The constant α [1993]

urpentine 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 oil is given by  where v is the velocity of oil at a distance a from the axis of the tube. The dimensions of η are

In a vernier calliper N divisions of vernier scale coincides with (N – 1) divisions of main scale (in which length of one division is 1 mm). The least count of the instrument should be[1994]

In a particular system, the unit of length, mass and time are chosen to be 10 cm, 10 g and 0.1 s respectively. The unit of force in this system will be equivalen t to [1994]

Which of the following is a dimensional constant? [1995]

The percentage errors in the measurement of mass and speed are 2% and 3% respectively.The error in kinetic energy obtained by measuring mass and speed will be [1995]

An equation is given as : 

where P = Pressure, V = Volume & θ = Absolute temperature. If a and b are constants, then dimensions of a will be [1996]

The density of a cube is measured by measuring its mass and length of its sides. If the maximum error in the measurement of mass and length are 4% and 3% respectively, the maximum error in the measurement of den sity will be [1996]

Which of the following will have the dimensions of time           [1996]

The force F on a sphere of radius  a moving in a medium with velocity v is  given by F = 6πηav.The dimensions of η are [1997]

The dimensional formula for magnetic flux is [1999]

Which one of the following groups have quantities that do not have the same dimensions? [2000]

The dimensions of Planck’s constant are same as    [2001]

The unit of the Stefan-Boltzmann's constant is   [2002]

The unit of permittivity of free space, ε_o is  [2004]

The dimensions of universal gravitational constant are [1992, 2004]

The ratio of the dimension of Planck’s constant and that of the moment of inertia has the dimension of [2005]

The velocity v of a particle at time t is given by where a, b and c are constant.The dimensions of a, b and c are respectively [2006]