Tag: system of unit

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Questions Related to system of unit

Multiple choice physics dynamics - explaining motion system of unit summary of si units system of units

If 1 kg wt = 10 N, the value of gravitational intensity will be 

  1. $\displaystyle 10{ m }/{ { s }^{ 2 } }$
  2. $\displaystyle \frac { 1 }{ 10 } { m }/{ { s }^{ 2 } }$
  3. $\displaystyle 1{ m }/{ { s }^{ 2 } }$
  4. $\displaystyle \frac { 1 }{ 100 } { m }/{ { s }^{ 2 } }$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

If $1\,kg\,wt=10\,N=F$

Then gravitational intensity is given by,
$g=\dfrac Fm$
$=\dfrac{10 }{1}=10 m/s^2$

Multiple choice physics dynamics - explaining motion system of unit summary of si units system of units

The magnetic field flux is expressed in

  1. Dynes

  2. Oersted

  3. Gauss

  4. Weber
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Magnetic Flux is defined as the number of magnetic field lines passing through a given closed surface. It gives the measurement of the total magnetic field that passes through a given surface area. S.I. unit of magnetic flux is Weber $(Wb)$.

Multiple choice physics dynamics - explaining motion system of unit summary of si units system of units

Which of the following class of forces is different from others?

  1. Pulling of a cart

  2. Stretching of a coiled spring

  3. Kicking of a football

  4. Electrical force
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pulling of a cart, stretching of a coiled spring and kicking of a football take place due to contact forces. A contact force is any force that requires contact to occur. But electrical force is a non contact force which acts on an object without coming physically in contact.

Multiple choice physics dynamics - explaining motion system of unit summary of si units system of units

Which of the following is used as SI prefixes:

  1. Micro

  2. Mica

  3. Mikro

  4. Maca
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Micro is a prefix used in defining some units.  Whenever the word micro is attached as a prefix to an SI unit,  it means it is one million times smaller than that unit. For example, 1 micrometre is one millionth part of a metre. Rest all other options are not   prefixes