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प्रश्न
Four children measure the length of a table which was about 2 m. Each of them used different ways to measure it.
- Sam measured it with a half metre long thread.
- Gurmeet measured it with a 15 cm scale from her geometry box.
- Reena measured it using her hand span.
- Salim measured it using a 5 m long measuring tape.
Which one of them would get the most accurate length? Give reason for your answer.
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उत्तर
Salim would get the most accurate length because he is using a 5 m long measuring tape which is longer than the table. So, he can measure the length of the table in one go accurately. While in the other cases the chance of making an error is higher due to multiple measurements. In case of Sam, only that lengths can be measured which are exact multiples of half a metre.
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संबंधित प्रश्न
Answer the following in short.
Which unit will you use to find the length of your notebook and why?
Name the device used to measure the following:
Size of your shoulder.
Name the device used to measure the following:
Size of your wrist.
Name the device used to measure the following:
Your height.
Name the device used to measure the following:
Your weight.
How can a measured length be expressed?
Why would you not like to use a measuring tape made of an elastic material like rubber to measure distance? What would be some of the problems you would meet in telling someone about a distance you measured with such a tape?
Four pieces of wooden sticks A, B, C and D are placed along the length of 30 cm long scale as shown in the following figure. Which one of them is 3.4 cm in length?
Which of the following figure shows the correct placement of a block along a scale for measuring its length?
SI unit of length is ______.
