Density of wood is 0.5g/cc in the CGS system of units. The numerical value of density in MKS system of units is
A
500
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B
600
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C
700
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D
800
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Solution
The correct option is A500 For any physical quantity, Numerical value × Unit = constant ⇒n2u2=n1u1 ⇒n2[M2L−32T02]=n1[M1L−31T01] ⇒n2=n1(M1M2)(L1L2)−3(T1T2)0 ⇒n2=0.5(gkg)(cmm)−3(ss)0 ⇒n2=0.5×(1103)×(1100)−3×(11)0 ⇒n2=500