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Light year is the unit of measurement of
Light year is the unit of measurement of
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Solution
The correct option is B Distance between the stars
1. A light-year is defined as the measurement of length or the distance light travels in a vacuum in a year. One light-year is close to 6 trillion miles.
2. Example of a light-year
a. Reflected sunlight travelling from the moon’s surface takes 4.04 × 10-8 light-years to reach the earth.
b. It takes 1.58 × 10-5 light-years for light from the Sun to reach the earth.
3. The value of one light-year can be numerically expressed in kilometres as:
One light-year, ly = 9.4607 × 1012 km
4. Hence, the correct option is B.
Distance between the stars
1. A light-year is defined as the measurement of length or the distance light travels in a vacuum in a year. One light-year is close to 6 trillion miles.
2. Example of a light-year
a. Reflected sunlight travelling from the moon’s surface takes 4.04 × 10-8 light-years to reach the earth.
b. It takes 1.58 × 10-5 light-years for light from the Sun to reach the earth.
3. The value of one light-year can be numerically expressed in kilometres as:
One light-year, ly = 9.4607 × 1012 km
4. Hence, the correct option is B.
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