What is the distance that light travels in one year called?

The distance travelled by light in one year is called a------

Assertion (A) : The distance between two celestial bodies is measured by the unit of light year. Reason (R) : The distance travelled by the light in one year in vacuum is called one light year.

A light wave can travel

Light travels from air into glass slab of thickness 50 cm and refractive index 1.5. (i) What is the speed of light in glass? (ii) What is the time taken by the light to travel through the glass slab? (iii) What is the optical path of the glass slab?

What is the value of one light year in tera metre?

Determine the number of light years in one metre.

What is light year?

In a Michelson experiment for measuring speed of light, the distance travelled by light between two reflections from the rotating mirror is 4.8 km. The rotating mirror has a shape of a regular octagon. At what minimum angular speed of the mirror (other than zero) the image is formed at the position where a non rotating mirror forms it ?