Tag: learning how to measure

Questions Related to learning how to measure

The volume of water in a measuring cylinder is 55 mL When a stone tied to a string is immersed in the water the water level rises to 83 mL. Find the volume of the stone

physics learning how to measure measurement of area and volume measurement of volume measurement of area, volume and density

  1. $28ml^2$

  2. $28ml$

  3. $38ml$

  4. $28m^2l$

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Correct Option: B
Explanation:
Initial level of water  $v _i = 55 \ ml$
Final level of water  $v _f = 83  ml$
Volume of stone  $V _{stone} = V _f - V _i = 83 - 55 = 28 \ ml$

 In a given system of units, the ratio of unit of volume to that of its area gives 

physics learning how to measure measurement of area and volume measurement of volume measurement of area, volume and density

  1. Density

  2. Length

  3. Mass

  4. Decibel

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Correct Option: B
Explanation:

SI Unit of volume is $m^3$ 

Unit of area is $m^2$
So $\dfrac{Volume}{area}=m^3/m^2=m$, that's the unit of length 

A cubic metre of water at $0^o$C is solidified into ice, density of ice is $0.96$ of water at $0^o$C. Which of the following deductions are true?
$1$. Water expands when solidified.
$2$. Ice will float in water at $0^o$C with half its volume above the surface.
$3$. Density of all liquids are higher than its density when solidified.

physics learning how to measure measurement of area and volume measurement of volume measurement of area, volume and density

  1. $3$ only

  2. $2$ only

  3. $1$ only

  4. $1$ and $2$

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Correct Option: C

A cubical block of wood of specific gravity $0.5$ and a chunk of concrete of specific gravity $2.5$ are fastened together. The ratio of mass of wood to the mass of concert which makes the combination to float with its entire volume submerged in water is 

physics learning how to measure measurement of area and volume measurement of volume measurement of area, volume and density

  1. $1/5$

  2. $1/3$

  3. $3/5$

  4. $2/5$

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Correct Option: A

The mass of 0.5 litre of hydrogen gas at NTP will be approximately

physics learning how to measure measurement of area and volume measurement of volume measurement of area, volume and density

  1. 0.0892 g

  2. 0.045 g

  3. 2 g

  4. 22.4 g

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Correct Option: B
Explanation:

$PV=mRT$

Under NTP 
 $P=10^5N/m,\ V=0.5L=0.5\times10^{-3},\ T=298K,\ R=8300/2$

$\Rightarrow 10^5\times 0.5\times 10^{-2}=m\times 8300\times 298/2$
$\Rightarrow m=0.042\ g$

The space occupied by the object is called ....................... .

physics learning how to measure measurement of area and volume measurement of volume measurement of area, volume and density

  1. Area

  2. Mass

  3. density

  4. Volume

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Correct Option: D
Explanation:

Volume of the object is defined as the space occupied by the object.

Mass per unit volume is ....................... .

physics learning how to measure measurement of area and volume measurement of volume measurement of area, volume and density

  1. Density

  2. Mass

  3. Volume

  4. All of the above

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Correct Option: A
Explanation:
Density of object is defined as the mass of the body per unit is volume.
$Density = \dfrac{Mass}{Volume}$

Express $1  ml $ in $m^3$.

physics learning how to measure measurement of area and volume measurement of volume measurement of area, volume and density

  1. $10^{-3}$

  2. $10^{-6}$

  3. $10^{-9}$

  4. None of the above

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Correct Option: B
Explanation:

$1ml=10^{-3}L=10^{-3}\times10^{-3}m^3=10^{-6}m^3$

1 liter = ______cm$^3$

physics learning how to measure measurement of area and volume measurement of volume measurement of area, volume and density

  1. 100

  2. 1000

  3. 10

  4. 1

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Correct Option: B
Explanation:

We know that: $1 m^3=1000\ liter$

Aslo, $1m^3=10^6cm^3$
$1000\ liter=10^6 cm^3$
$1\ liter=1000\ cm^3$

1 cm$^3=$ ______ ml

physics learning how to measure measurement of area and volume measurement of volume measurement of area, volume and density

  1. 1

  2. 10

  3. 0.1

  4. 100

Show answer
Correct Option: A
Explanation:

We know that $1 m^3=1000\ liter=1000\times 1000ml$

Aslo $1m^3=10^6cm^3$
So, $10^6 cm^3=1000\times 1000 ml$
$\Rightarrow 1 cm^3=1ml$