why do we need smaller units of length
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Answer. We need smaller units of length to measure small size. The smallest possible size for anything in the universe is the Planck Length, which is across...
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Smallest unit of length is the Planck length which is 1.6 x10-35 m across.
we need smaller units to measure small size.
for ex- we can measure the length of road in km or metres but cant measure the grain of rice in km or m. for this we need smaller units such as cm.
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