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Fill in the blanks: 1. In ancient times,…….watch and………..watch were used to calculate time. 2. The time period between two new moon day is called ………….. 3. The metal ball is known as ……….. of simple pendulum. 4. ………….is the international unit of speed. 5. The distance time graph for uniform speed is s ………… |
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Answer» 1. Sand ,sun-light 2. lunar month 3. ball 4. Metre/ second 5. straight line |
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