Q. A random error which occurs when stopwatches start or stop by hand is called

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Q. Most stopwatches can measure time to a precision of

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Q. A heavy object in pendulum is called

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Q. In a pendulum, each to-and-fro motion is one

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Q. Many natural events repeat themselves at

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Q. An experiment requires to measure the distance between 0.5 m to 0.6 m apart, which of the following instruments should be used so that distance can be measured with an accuracy of 0.001 m?

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Q. For most people, human reaction time is about

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Q. Clocks can be used to measure time intervals in

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Q. The SI unit of time is

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Q. Digital stopwatches usually show readings up to

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Q. On Earth, the period of a pendulum depends on its

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Q. The time taken by the simple pendulum for one complete oscillation is

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Q. To break the intermolecular bonds of molecules in order for a solid to melt, we need

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Q. The change of state from liquid to solid without a change in temperature is known as

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Q. The temperature changes occur in solid state is

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Q. Temperature changes occurs only when the substance is

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Q. For a pure substance, melting occurs at a definite temperature which is known as its

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Q. During solidification, temperature remains constant at the

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Q. A pure substance will solidify or freeze at a temperature equal to its

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Q. The freezing point of naphthalene is

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