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Question
Suppose you want to measure the time of your wristwatch. Here the time of your wristwatch is the unknown quantity. You then choose a known quantity for comparison, let say seconds. What is this known quantity called?
Suppose you want to measure the time of your wristwatch. Here the time of your wristwatch is the unknown quantity. You then choose a known quantity for comparison, let say seconds. What is this known quantity called?
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Solution
The correct option is C Unit of Measurement
The measurement means the comparison of an unknown quantity with some fixed quantity of the same kind. If you want to measure any unknown physical quantity, you have to compare it with a known standard physical quantity. This known quantity is called the unit of measurement. This fixed quantity known as measuring standard is called the unit. For example, 60 seconds have two parts, a value and a unit. 60 is the value and second are the units of time.
The measurement means the comparison of an unknown quantity with some fixed quantity of the same kind. If you want to measure any unknown physical quantity, you have to compare it with a known standard physical quantity. This known quantity is called the unit of measurement. This fixed quantity known as measuring standard is called the unit. For example, 60 seconds have two parts, a value and a unit. 60 is the value and second are the units of time.
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