the density of a material in cgs system of unit is 4gmcm–³. in a system of unit in which unit of length is 10 cm and unit of mass 100gm. the value of density of material will be a) 4×10–² b)4×10–¹ c) 4×10¹ d)4×10²
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40 units
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The density of material in CGS system of units is 4g/cm
3
. In a system of units in which unit of length is 10cm and unit of mass is 100g, the value of density of material will be
Medium
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Solution
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Correct option is
B
40
In CGS, d=4
cm
3
g
If unit of mass is 100 g, 4 g mass in new units is
100
4
units
and unit of distance is 10 cm, 1 cm in new units is
10
1
units
So, density =
(
10
1
cm)
3
4(
100
g
)
=
(
10
1
)
3
(
100
4
)
=40 units
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