The density of mercury is 13-6 - 103 kg m -3- The mass of 1 cm 3 of mercury is-A- A is correct and R is the correct reason for A-B- A is correct but R is not the correct reason for A-C- A is incorrect but R is correct-D- Both A and R is incorrect-

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Standard VIII

Physics

Density

The density o...

Question

The density of mercury is $13.6 \times 10^{3} k g m^{- 3}$ . The mass of $1 c m^{3}$ of mercury is:

A is correct and R is the correct reason for A.

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A is correct but R is not the correct reason for A.

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A is incorrect but R is correct.

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Both A and R is incorrect.

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Solution

The correct option is B A is correct but R is not the correct reason for A.
The density of mercury is $13.6 \times 10^{3} k g m^{- 3}$ .
We know $1 c m$ = $10^{- 2} m$ and $1 k g = 10^{3} g$ .
$13.6 \times 10^{3} k g m^{- 3}$ = $13.6 \times 10^{3} \times 10^{3} \times 10^{- 6} g c m^{- 3}$ .
So, $1 c m^{3}$ contains $13.6 g$ of mercury.

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The density of mercury is 13.6×103kgm−3. The mass of 1cm3 of mercury is:

The correct option is B A is correct but R is not the correct reason for A.The density of mercury is 13.6×103kgm−3. We know 1 cm = 10−2 m and 1 kg = 103 g. 13.6×103kgm−3 = 13.6×103×103×10−6 gcm−3. So, 1 cm3 contains 13.6 g of mercury.

The density of mercury is $13.6 \times 10^{3} k g m^{- 3}$ . The mass of $1 c m^{3}$ of mercury is: