Answer :
for he density of the box
d= m
v
= 500
450
d= 1.11
relative density = density of box = 1.11 = 1.11 density
density of water 1
for the wight of box
m=W
g [g = 10 n/kg]
= 500
10
= 50
d= m
v
= 500
450
d= 1.11
relative density = density of box = 1.11 = 1.11 density
density of water 1
for the wight of box
m=W
g [g = 10 n/kg]
= 500
10
= 50
mass of box = 500g
volume of box = 450 cm³
density = mass / volume
⇒ d = 500/450 g/cm³
⇒ d = 10/9 g/cm³
⇒ d = 1.11 g/cm³
relative density of a substance = density of substance / density of water
density of box = 1.11 g/cm³
density of water = 1 g/cm³
relative density of box = 1.11 / 1 = 1.11
(note that it has no unit)
If density of a substance is less than density of water, it will float on water and its weight in water will be 0. But density of box is higher than density of water. Since density of box is higher than density of water, it will submerge in water and it will have some weight in water.
weight of box in water =(density of box - density of water)×volume of box×g
⇒ weight in water = [(10/9) -1]×450×g
= [(10-9)/9]×450×g
= (1/9) ×450×g
= 50 g
So correct option is (c).
volume of box = 450 cm³
density = mass / volume
⇒ d = 500/450 g/cm³
⇒ d = 10/9 g/cm³
⇒ d = 1.11 g/cm³
relative density of a substance = density of substance / density of water
density of box = 1.11 g/cm³
density of water = 1 g/cm³
relative density of box = 1.11 / 1 = 1.11
(note that it has no unit)
If density of a substance is less than density of water, it will float on water and its weight in water will be 0. But density of box is higher than density of water. Since density of box is higher than density of water, it will submerge in water and it will have some weight in water.
weight of box in water =(density of box - density of water)×volume of box×g
⇒ weight in water = [(10/9) -1]×450×g
= [(10-9)/9]×450×g
= (1/9) ×450×g
= 50 g
So correct option is (c).