Tag: physics

Questions Related to physics

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

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

  1. $10^5$

  2. $10^6$

  3. $10^9$

  4. $10^{12}$

Show answer
Correct Option: B
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.

$5800 \mathring A$ in nm will be?

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

  1. 58

  2. 5.8

  3. 580

  4. 0.58

Show answer
Correct Option: C
Explanation:

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

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

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

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

  1. 1000

  2. 100

  3. 0.1

  4. 10

Show answer
Correct Option: A
Explanation:

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

One centimetre is equal to

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

  1. 5 mm

  2. 10 mm

  3. 15 mm

  4. None of these

Show answer
Correct Option: B
Explanation:

We know that:

$ 1\ cm = 10\ mm$

Which of the following is not a unit of mass?

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

  1. Slug

  2. Kilogram

  3. Ton

  4. Newton

Show answer
Correct Option: D
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. 

How many quintals are there in one metric ton?

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

  1. 10

  2. 100

  3. 1000

  4. none of these

Show answer
Correct Option: A
Explanation:

Here, quintal and ton both are the unit of mass. 

$1$ quintal $=100 kg$ and $1$ ton $=1000kg$
Thus, $1$ ton $=10$ quintals

How many kilograms are there in one metric ton?

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

  1. 10

  2. 100

  3. 1000

  4. 10000

Show answer
Correct Option: C
Explanation:

The metric ton is a unit of mass and one metric tone is equal to $1000$ kilograms.

Slug is a unit of

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

  1. weight

  2. mass

  3. length

  4. area

Show answer
Correct Option: B
Explanation:

Slug is the unit of mass in US common system of units. It is a mass which accelerates by $1\ ft/s^2$ when a one pound force is applied.   

The ratio of mass of a body in moon and earth is

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

  1. $1$

  2. $1/6$

  3. $1/12$

  4. $1/2$

Show answer
Correct Option: A
Explanation:

When a body moves from one planet another the gravitational force acting on it changes but mass remains the same. Hence mass on earth and on the moon of any object is the same.

A particle has weight 1 grams. It's weight in milligrams will be

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

  1. $10mg$

  2. $100mg$

  3. $1000mg$

  4. $10000mg$

Show answer
Correct Option: C
Explanation:

We know that, $1$ miligram (mg) $=10^{-3}$ gram

So, $1000\ mg=1\ gm$