Which of the following is a derived quantity?

(a)

mass

(b)

time

(c)

area

(d)

length

Which of the following is correct?

(a)

1L = 1cc

(b)

1L = 10 cc

(c)

1L = 100 cc

(d)

1L = 1000 cc

SI unit of density is ________.

(a)

kg/m²

(b)

kg/m³

(c)

kg/m

(d)

g/m³

Two spheres have equal mass and volume in the ratio 2:1. The ratio of their density is ________.

(a)

1:2

(b)

2:1

(c)

4:1

(d)

1:4

Light year is the unit of ________.

(a)

Distance

(b)

time

(c)

density

(d)

both length and time