CBSE Class 11 Physics Units and Measurements Quiz 2

1. What is the dimensional formula of magnetic field?

A MT-2A-1 B MT-1A-2 C M-1L-2TA-1 D M-1LTA-2

2. Electron volt is a unit of

A charge B potential difference C energy D magnetic force

3. The volume of a cube in m³ is equal to the surface area of the cube in m². The volume of the cube is

A 64 m³ B 216 m³ C 512 m³ D 196 m³

4. In SI system the fundamental units are

A meter, kilogram, second, ampere, Kelvin, mole and candela B meter, kilogram, second, coulomb, Kelvin, mole and candela C meter, Newton, second, ampere, Kelvin, mole and candela D meter, kilogram, second, ampere, Kelvin, mole and lux

5. Which one of the following represents the correct dimensions of the coefficient of viscosity?

A [ML-1T-2] B [MLT-1] C [ML-1T-1] D [ML-2T-2]

6. 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

A 300 B 450 C 600 D 0

7. Resolution is

A a measure of the bias in the instrument B None of these C the smallest amount of input signal change that the instrument can detect reliably D a measure of the systematic errors

8. Absolute error of the measurement is

A the difference between the individual measurement and the true value of the quantity cubed. B the difference between the individual measurement and the true value of the quantity squared. C the difference between two individual measurements and their mean D the difference between the individual measurement and the true value of the quantity

9. Which of the following units denotes the dimensions [ML2/Q2], where Q represents the electric charge?

A Wb/m² B Henry(H) C H/m² D Weber(Wb)

10. Light year is a unit of

A time B distance C sunlight intensity D mass