Question

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

Answer 1

Answer:

here is answer

Speed of Light = 3 × 108 ms-1

Seconds in 1 year = 365 × 24 × 60 × 60

= 3.153 × 107 seconds

.

Total distance in 1 light year = speed × time

= 3 × 108 × 3.153 × 107

= 9.46 × 1015 m

1 m = 10-3 km

9.46 × 1015 m = 9.46 × 1012 km

Therefore, Inian and Ezhilan both are right.

aph south se hoo

Answer 2

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Inian is correct. The value of a light year is approximately 9.46 x 10^15 meters, not 9.46 x 10^12 kilometers as argued by Ezhilan.

A light year is a unit of measurement used in astronomy to denote the distance light travels in one year. Light travels at a speed of approximately 299,792,458 meters per second in a vacuum. To calculate the distance traveled by light in one year, we multiply this speed by the number of seconds in a year.

Number of seconds in a year:

1 year = 365 days × 24 hours × 60 minutes × 60 seconds

≈ 31,536,000 seconds

Distance traveled by light in one year:

Speed of light × Number of seconds in a year

≈ 299,792,458 m/s × 31,536,000 s

≈ 9.461 × 10^15 meters

Therefore, the correct value for a light year is approximately 9.46 x 10^15 meters. Inian's statement aligns with this accepted value. Ezhilan's argument of 9.46 x 10^12 kilometers is incorrect, as it is three orders of magnitude smaller than the actual value.

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