Which of the following is a unit of distance?

Question

Question

This question was previously asked in

SSC CGL 2022 Tier-I Official Paper (Held On : 07 Dec 2022 Shift 1)

Answer 1

The correct answer is Light year.

Key Points:

The unit of length used to express astronomical distances is the light year, which is roughly comparable to 5.88 trillion miles or 9.46 trillion kilometres.
According to the International Astronomical Union (IAU), a light-year is the distance that light travels in a vacuum in one Julian year (365.25 days).
Since "light-year" incorporates the term "year," which designates a unit of measurement for time, it is occasionally misinterpreted as a unit of time.
The light-year is most typically used to depict distances to stars and other distances on a galactic scale, especially in non-specialist contexts and popular science publications.
The measuring unit most frequently used in professional astronomy is the parsec, which is derived from astrometry and equals 3.26 light-years.

Additional Information:

Newton:
- A newton is a unit of force in the International System of Units (symbol: N).
- 1 kgm/s² is the force that accelerates a mass of one kilogramme by one metre per second square.
- It is named after Isaac Newton.
Watt:
- The electrical power determined in Watts is the equivalent of one ampere under one volt of pressure.
Joule:
- The work performed by a force of one newton acting through one metre is equivalent to one joule, a unit of work or energy in the International System of Units (SI).