Question

have to know its :
(a) mass and area
3. In order to find the density of a solid we
(b) weight and volume
(c) weight and area (d) mass and volume
(c) does not change (d) none of these
5. In order to find speed of a moving body,
2. When a liquid is heated, it expands
comparatively
(a) more than solid
(b) less than gas
(c) less than solid
(d) either (a) or (b)
4. When the air cools, its density :
(a) increases
(b) decreases
we have to know its :
(a) displacement and time
(b) distance and time
(c) mass and volume
(d) distance and direction​

Answer 1

Answer:

answer for the second one is option d)either(a) or (b)

Answer 2

Answer:

3 rd is d mass and volume of liquid