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Questions Related to physics

Multiple choice physics learning how to measure measurement of small and large distances measurement of distance unit of fundamental quantities

What is the value of $1 \ m $ in $\mu$ (micron)?

  1. $10^5$
  2. $10^6$
  3. $10^9$
  4. $10^{12}$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Answer is B

$1\ m=10^{6}\mu $
The micrometer is a common unit of measurement for wavelengths of infrared radiation as well as sizes of biological cells and bacteria and is also commonly used in plastics manufacturing.

Multiple choice physics learning how to measure measurement of small and large distances measurement of distance unit of fundamental quantities

$5800 \mathring A$ in nm will be?

  1. 58

  2. 5.8

  3. 580

  4. 0.58
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

We know that $1{\buildrel _{\circ}\over{\mathrm{A}}}=10^{-10} m$

$1$ nanometer or $1\ nm =$$10^{-9}m$
So, we get $1{\buildrel _{\circ}\over{\mathrm{A}}}=0.1 nm$
$5800{\buildrel _{\circ}\over{\mathrm{A}}}=0.1\times 5800\ nm= 580\ nm$

Multiple choice physics learning how to measure measurement of small and large distances measurement of distance unit of fundamental quantities

Convert $1$ $ \displaystyle g/cm^{3} $ to $\displaystyle kg/m^{3} $

  1. 1000

  2. 100

  3. 0.1

  4. 10
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

We know that  $1 \ g = \dfrac{1}{1000} \ kg$
Also,  $1\ cm = \dfrac{1}{100} \ m$
Thus   $1g/cm^3 = 1 \ g\times\dfrac{1  \ kg}{1000 \ g}\times \dfrac{1}{1 \ cm^3}\times \dfrac{(100)^3 \ cm^3}{1 \ m^3} = 1000 \ kg/m^3$

Multiple choice physics learning how to measure measurement of small and large distances measurement of distance unit of fundamental quantities

Which of the following is not a unit of mass?

  1. Slug

  2. Kilogram

  3. Ton

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

The slug is the unit of  mass in the US common system of units. 

It is a mass that accelerates by $1\ ft/s^2$ when $1$ pound force is applied. 
The kilogram (kg) is the SI unit of mass. 
Ton is also represent the unit of mass and $1$ ton is equal to $1000$ kg.
Newton is the SI unit of force.