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Nature of Physical World and Measurement — Physics STD 11 — Question

Tamilnadu BoardEnglish MediumSTD 11PhysicsNature of Physical World and Measurement2 Marks
Question
Determine the number of light years in one metre.
✓

Answer

$1 ly =9.46 \times 10^{15} m $
$ 1 m =\frac{1}{9.46 \times 10^{15}}=1.057 \times 10^{-16} l y$

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