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प्रश्न
Give a reason for the following.
Measurements are very important for life.
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उत्तर
We need to measure the quantities of most of the things around us to be able to take correct decisions regarding their utility. To find the exactness of an unknown quantity, we need its measurement.
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संबंधित प्रश्न
Fill in the blank
Mass = density × _______
A rectangular field is of length 60 m and breadth 35 m. Find the area of the field.
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.
Convert the following quantity as indicated:
1 ft = cm
Convert the following quantity as indicated:
5 mg = ………. kg
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.
State if the following statement is true or false. Correct the statement if it is false.
The average of a group of observations is calculated by adding all the observations and dividing the sum by the number of observations.
Give a reason for the following.
Measuring units are standardized.
Physical quantities are classified into ______ type.
What is physics?
