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Units and Measurement question

2011 · Q108
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Units and Measurement question

2011 · Q108

NEETPhysicsUnits and MeasurementMCQ+4 / −1
The density of a material in CGS system of units is 4 g cm−-−3. In a system of units in which unit of length is 10 cm and unit of mass is 100 g, the value of density of material will be
  1. A
    0.04
  2. B
    0.4
  3. C
    40
  4. D
    400
View written solutionFree

Correct answer: C

In CGS system,

Density = 4gcm3{g \over {c{m^3}}}cm3g​

When unit of mass is 100g and unit of length is 10 cm, then

Density = x 100g(10cm)3{{100g} \over {{{\left( {10cm} \right)}^3}}}(10cm)3100g​

∴\therefore∴ 4gcm3{g \over {c{m^3}}}cm3g​ = x 100g(10cm)3{{100g} \over {{{\left( {10cm} \right)}^3}}}(10cm)3100g​

⇒\Rightarrow⇒ x = 40 unit

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