Advertisements
Advertisements
प्रश्न
A block of iron has dimensions 2 m × 0.5 m × 0.25 m. The density of iron is 7.8 g cm−3. Find the mass of block.
Advertisements
उत्तर
Given: l = 2m
b = 0.5 m
h = 0.25 m
Density of iron = 7.8 g cm−3
= 7.8 × 1000 kg m−3
= 7800 kg m−3
volume of block = l × b × h
= 2 × 0.5 × 0.25
= 0.25 m−3
From relation d = `M/V`
∴ Mass of iron block M = V × d
= 0.25 × 7800 kg m−3
= 1950 kg
APPEARS IN
संबंधित प्रश्न
How does the density of water changes when it is heated from 0°C to 4°C,
A piece of brass of volume 30 cm3 has a mass of 252 g. Find the density of brass in (i) g cm-3, (ii) kg m-3.
Select the correct alternative:
lO mm is equal to
What is measurement? How is a measurement expressed?
Convert the following quantity as indicated:
5 mg = ………. kg
Name the S.I. unit.
Answer the following in detail.
Explain by giving two examples of why the measurement of a physical quantity is expressed as a combination of a numeral and a unit.
State if the following statement is true or false. Correct the statement if it is false.
The region enclosed within the boundaries of a two-dimensional figure is called its area.
Answer the following in short.
What is parallax error?
Who is my companion?
| Group 'A' | Group 'B' | ||
| 1 | Velocity | a | litre |
| 2 | Area | b | kilogram |
| 3 | Volume | c | metre/second |
| 4 | Mass | d | kilogram/cubic metre |
| 5 | Density | e | square metre |
