Question

A light year is the unit of?

Answer 1

Hint: Meaning of year is ultimately days and may be you will consider it as time but it is a unit of distance. SI unit of distance is kilometre. Leap year is another term in types of year. Leap year has one day more than ordinary year.

Complete step-by-step answer:
Light year is the unit of distance. When light travels for one year then it is called a light year. Light travels at a speed of 3, 00,000 km per second. So 10 trillion km is the distance covered by light in one year. Light year is a unit of distance not time.
A light year is the distance traveled by light in 365.25 days.
As defined by the IAU, light year is a product of Julian year and speed of light c. It has been used since 1984.
The distance represented in light years includes those between stars in the same general area. In nanoseconds, the light travels one foot.
In a vacuum, light travels at 1079252849 km/ h.

Additional information:
Which is faster? Sound or light.
Speed of sound through air is 340 m/s. It is faster in steel than water.
In vacuum, light travels at 300 million meters per second.
From this we can say that information can be transmitted faster if the mode of communication uses light.

Note: By the definition of meter, the speed of the light is 299792458 m/s. A Julian year is exactly 365.25 days. Do not get confused between leap year and light year. Leap year has 366 days in it.