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Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 9

Numerical Problem. Inian and Ezhilan argue about the light year. Inian tells that it is 9.46 × 1015 m and Ezhilan argues that it is 9.46 × 10 12 km. Who is right? Justify your answer. - Science

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Question

Numerical Problem.

Inian and Ezhilan argue about the light year. Inian tells that it is 9.46 × 1015 m and Ezhilan argues that it is 9.46 × 10 12 km. Who is right? Justify your answer.

Numerical
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Solution

The magnitude of light year = 9.46 × 10<sup>15</sup> m. So Inian gave a correct answer.

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Chapter 1: Measurement - Exercise [Page 12]

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Samacheer Kalvi Science [English] Class 9 TN Board
Chapter 1 Measurement
Exercise | Q IX. 1. | Page 12

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