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State whether the following are true or false.1. Sun dial and sand clock were used in ancient time. ______2. Cubit, handspan and foot span are standard units of measurement. ______ 3. Pendulum clock repeats its motion at equal intervals of time. ______ 4. In digital clocks, mechanical vibrations are converted into digital electronic signals. ______ 5. Sundials can also be used on rainy days. ______ |
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Answer» Answer: 1. True 2. FALSE 3. True 4. True 5. False |
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