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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Physics
Chapter
Units and Dimensions

NTA Abhyas 2020 · Physics · Units and Dimensions

In CGS system of units, the density of a material is 4g cm ^ - 3 ....

In CGSCGS system of units, the density of a material is 4gcm−34g{cm}^{- 3}. What will be the value of the density of the material in a system of units in which unit of length is 10cm10\text{cm} and unit of mass is 100 g\text{100 g}?&

Options

  1. A0.04\text{0}\text{.04}
  2. B0.4\text{0}\text{.4}
  3. C40\text{40}
  4. D400\text{400}

Correct answer

C. 40\text{40}

Step-by-step solution

As n1u1=n2u2{n}_{1}{u}_{1} = {n}_{2}{u}_{2}

4gcm−3=n2100g(10 cm)34g{cm}^{- 3} = {n}_{2}\dfrac{100 g}{\left(\text{10 cm}\right)^{3}}

⇒n2=40⇒ {n}_{2} = \text{40}

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