The mass of 200cm3 of stone is 500g. its density will be…………
a) 2.5gcm3
b) 2.5gcm-3
c) 2.1gcm3
d) 2.0gcm3
Explanation: As ρ=m/v So ρ =500/2.5 ρ=2.5gcm-3
A rectangular metal piece has length 0.3m, width 0.2m and height 0.1m, if its mass is 47.4kg, calculate its density.
a) 6900kg/m3
b) 7900kg/m3
c) 8900kg/m3
d) 9900kg/m3
Explanation: As V = L × W × H =0.3 × 0.2 × 0.1 =0.006m3
As ρ =m/v So ρ =47.4/0.006 ρ = 7900kg/m3
A diamond has a volume of 0.00002m3, its mass is measured as 0.072kg. Calculate its density.
a) 3400kg/m3
b) 3500kg/m3
c) 3600kg/m3
d) 3700kg/m3
Explanation: As ρ =m/v So ρ =0.072/0.00002 ρ = 3600kg/m3
Which is a heavier, a cubic meter of steel or a cubic meter of wood?
a) steel
b) wood
c) none
d) both a & b
Explanation: the density of steel is greater than wood therefore a cubic meter of steel is heavier.
(mass/density) is equal to ……………….
a) volume
b) area
c) pressure
d) energy
Which one is having highest density? Extra
a) Snow
b) soil
c) Teflon
d) sand
Explanation: Teflon, also known as polytetrafluoroethylene has density 2200 kg/m3. It is a thermoplastic polymer, which is a white solid at room temperature. Density of snow, soil and sand are 110 kg/m3, 2050 kg/m3 and 1515 kg/m3 respectively.
