Physics: Measurements and Forces Quiz

Fundamental quantities are physical quantities that are independent of other physical quantities.

Force, pressure, acceleration, volume, etc. are examples of derived quantities.

The three basic units in the C.G.S. system are centimeter, gram, and second.

<p>SI stands for International System of Units and it comprises a complete metric system of units of measurement for scientists.</p> Signup and view all the answers

<p>In the M.K.S. system, the fundamental units are meter, kilogram, and second for length, mass, and time, respectively.</p> Signup and view all the answers

<p>The seven fundamental quantities in the SI system are length (meter), mass (kilogram), time (second), electric current (ampere), temperature (kelvin), amount of matter (mole), and luminous intensity (candela).</p> Signup and view all the answers

<p>Fundamental units are the units of fundamental quantities. These units are independent and cannot be broken down into other units.</p> Signup and view all the answers

<p>The quantities that cannot be defined on their own and can be broken down in terms of the base quantities are called the derived quantities.</p> Signup and view all the answers

<p>Mole is the SI unit of substance.</p> Signup and view all the answers

<p>Candela is the SI unit of luminous intensity.</p> Signup and view all the answers

<p>Systematic errors arise due to instrumental errors, incorrect experimental techniques, and personal errors.</p> Signup and view all the answers

<p>The SI unit of velocity is m/s.</p> Signup and view all the answers

<p>An example of an instrumental error is zero error in vernier calipers or screw gauge.</p> Signup and view all the answers

<p>Random errors come from unpredictable changes in experimental conditions and make it give different results for the same measurements taken repeatedly.</p> Signup and view all the answers

<p>Random errors can be reduced by repeatedly taking a greater number of measurements.</p> Signup and view all the answers

<p>Least count error is the error associated with the resolution of the instrument.</p> Signup and view all the answers