Question

The density of a material in CGS system of units is 8 g/cm3. In a system of units in which unit of length is 20 cm and unit of mass is 100 g, the value of density of material will be
640
64
80
800

Answer 1

Answer:

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

(a) 0.4

(b) 40

(c) 400

(d) 0.04

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