chapter-1-UNITS AND MEASUREMENTS-GRADE-XI

The symbol to represent “Amount of Substance” is _______

• K

• A

• Cd

• mol

Which among the following is the Supplementary Unit——–

• Mass

• Time

• Solid angle

• Luminosity

What is the unit of solid angle?

• second

• Steradian

• kilogram

• radian

_____________is the average distance of the Sun from the Earth.

• Astronomy Unit

• Astronomical unit

• Astrological Unit

• Archaeological Unit

Dimensions of kinetic energy is the same as that of ________

• Acceleration

• Velocity

• Work

• Force

The smallest value which is measured using an instrument is known as ________

• Absolute count

• Least count

• Round off value

• Minimum count

The quantity having the same unit in all system of unit is

• mass

• time

• length

• temperature

The damping force on an oscillator is directly proportional to the velocity. The unit of the constant of proportionality is

• kg-ms^-1

• kg-ms^-2

• kgs^-1

• kg-s

If the value of work done is 10¹⁰ g-cm² s^-2 , then its value in SI units will be

• 10 kg-m²s^-2

• 10² kg-m²s^-2

• 10⁴ kg-m²s^-2

• 10³ kg-m²s^-2

Amongst the following options, which is a unit of time?

• Light year

• Parsec

• Year

• None of these