Physics Quiz on Units and Measurements

Among the given following units which one is not unit of length?

• Angstrom.

• Fermi.

• Barn.

• Parsec.

Number of fermi in one metre is:

• 10^6 F

• 10^17 F

• 10^15 F

• 10^14 F

Which of the following ratios express pressure.

• Force/Area

• Energy/Volume

• Energy/Area

• Force/Volume

If the unit of force is 100N, unit of length is 10m and unit of me is 100s. What is the unit of mass in this system of units?

• 10^5 kg

• 10^7 kg

• 10^2 kg

• 10^9 kg

The sum of the numbers 436.32, 227.2 and 0.301 in appropriate significant figures is

• 663.821

• 664.

• 663.8

• 663.82

Which of the following has unit but no dimension?

• Angle.

• Strain.

• Relative velocity.

• Relative density.

On checking the dimensional consistency of equation, it is based on the principle of:

• Homogeneity of equations.

• Homogeneity of dimensions.

• Homogeneity of expressions.

• Homogeneity of formula.

The mass and volume of a body are 4.237g and 2.5cm , respectively. The density of the material of the body in correct significant figures is:

• 1.6048gcm^-3

• 1.69gcm^-3

• 1.7gcm^-3

• 1.695gcm^-3

Which of the following has same dimension as that of Planck constant?

• Work.

• Linear momentum.

• Angular momentum.

• Impulse.

Which of the following pairs of physical quantities does not have same dimensional formula?

• Work and torque.

• Angular momentum and Planck’s constant.

• Tension and surface tension.

• Impulse and linear momentum