Advertisements
Advertisements
प्रश्न
A boy makes a ruler with graduations in cm on it, (i.e. 100 divisions in 1 m). To what accuracy this ruler can measure? How can this accuracy be increased?
Advertisements
उत्तर
Total length of the ruler = 1 m = 100 cm
No. of divisions = 100
Length of each division = `"Total length"/"total no. of divisions"`
= 100 cm/100
= 1 cm
Thus, this ruler can measure with an accuracy of 1 cm.
To increase the accuracy, the total number of divisions on the ruler must be increased.
APPEARS IN
संबंधित प्रश्न
What is a lunar month?
A boy measures the length of a pencil and expresses it to be 2.6 cm. what is the accuracy of his measurement? Can he write it as 2.60 cm?
Amongst the various physical measurements recorded in an experiment, which physical measurement determines the degree of accuracy?
Explain the term pitch. How are they determined?
Put the symbol in the box given below.
640 g `square` 800 g
Complete the analogy.
Sugar : Beam balance :: Lime juice : ______?
One astronomical unit is equal to ______.
How will you measure the weight of the object with irregular shapes?
Questions based on Higher Order Thinking Skills:
There are three spheres A, B, C as shown below.
Sphere A and B are made of same material. Sphere C is made of a different material. Spheres A and C have equal radii. The radius of sphere B is half that of A. Density of A is double that of C.
Now answer the following questions.
- Find the ratio of masses of spheres A and B.
- Find the ratio of volumes of spheres A and B.
- Find the ratio of masses of spheres A and C.
Define measurement.
