PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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Choose the best option:
A)
Statement 1: Sundial is an instrument that can measure time most accurately.
Statement 2: Quartz clock is an instrument used in olden days for measuring time.
B)
Statement 1: Age of stars is represented in the units of nanoseconds.
Statement 2: Microsecond and nanosecond have the largest time interval in the clocks.
C)
Statement 1: Time period of a pendulum is never constant.
Statement 2: Time period of a pendulum is always constant.