physical measurement

Which of the following pairs has the same dimensions

• length - distance and radius

• impulse and momentum

• surface tension and force

• moment of inertia and tourque

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 MLT

• MLT^-3 and MLT^-4

• k

The dimensions of kinetic energy is same as that of

• Force

• pressure

• work

• momentum

The dimensional formula of force

• MLT^-1

• ML^-2T^-1

• MLT^-2

• M^-1LT^-2

In SI system the fundamental units are

• meter, kilogram, second, ampere, kelvin,mole and candela

• meter, gram, second , kelvin, ampere, mole, candella

• meter, newton, second, coulomb, kelvin, mole, candella

• meter , kilogram, second ampere, kelvin, mole and flux

which of the following represents the correct dimensions of momentum = mass x velocity

• ML^-1T^-2

• MLT^-1

• ML^-1T^-1

• ML^-2T^-2

The most accurate reading of the length of 6.28 cm long fiber is

• 6cm

• 6.5 cm

• 5.99 cm

• 6.26 cm

The relative error in the measurement of the side of a cube is 0.027. the relative error in the measurement of volume.....

• 0.027

• 0.054

• 0.081

• 0.046

If the dimensions of A is L²T and the dimensions of B are LT² then the dimensions of A - 3B ........

• L³t³

• LT

• L²T²

• not defined