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Question
A task was assigned to Virat to measure a snake-like steel rod which looks something like this.
Which of the following objects/methods should he use to make this measurement?
A task was assigned to Virat to measure a snake-like steel rod which looks something like this.
Which of the following objects/methods should he use to make this measurement?
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Solution
The correct option is C A thread and a ruler
Virat cannot use a meter scale as it cannot be bent along the curve. If he uses pieces of marbles, there will always be some gaps left between two marbles. A thread and ruler can be used to measure the required length. The thread is outlined with the curve as shown in the diagram below and then the thread can be straightened and measured with the help of ruler.
A thread and a ruler
Virat cannot use a meter scale as it cannot be bent along the curve. If he uses pieces of marbles, there will always be some gaps left between two marbles. A thread and ruler can be used to measure the required length. The thread is outlined with the curve as shown in the diagram below and then the thread can be straightened and measured with the help of ruler.
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