Q. 54.5( 11 Votes )

Define the unit in w

Answer :

The size of stars and the distance between them is enormous. To express such large distances, a unit called light year is commonly used. One light year is equal to the distance traveled by light in one year. Light travels 3 × 105 km in one second. A year has 365 × 24 × 60 × 60 = 3.1536 × 107 seconds. Thus, light will travel a distance of 3 × 105 × 3.1536 × 107 km in one year. This is equal to 9.46 × 1012 km. Thus one light year is equal to the distance of 9.46 × 1012 km.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Quiz | Stars and Solar SystemQuiz | Stars and Solar SystemQuiz | Stars and Solar System26 mins
Let's Discuss NCERT QuestionLet's Discuss NCERT QuestionLet's Discuss NCERT Question41 mins
Smart Revision | The Solar SystemSmart Revision | The Solar SystemSmart Revision | The Solar System41 mins
Smart Revision | The Moon and the Moon's SurfaceSmart Revision | The Moon and the Moon's SurfaceSmart Revision | The Moon and the Moon's Surface46 mins
Smart Revision | ConstellationSmart Revision | ConstellationSmart Revision | Constellation42 mins
Lakhmir Singh | Stars and the Solar System (Part-1)Lakhmir Singh | Stars and the Solar System (Part-1)Lakhmir Singh | Stars and the Solar System (Part-1)37 mins
Quiz | Imp. Qs. on Playing With NumbersQuiz | Imp. Qs. on Playing With NumbersQuiz | Imp. Qs. on Playing With Numbers45 mins
Quiz | Become a Master in RationalisationQuiz | Become a Master in RationalisationQuiz | Become a Master in Rationalisation46 mins
Smart Revision | Human Reproductive SystemSmart Revision | Human Reproductive SystemSmart Revision | Human Reproductive System41 mins
Champ Quiz | Force, Pressure & SoundChamp Quiz | Force, Pressure & SoundChamp Quiz | Force, Pressure & Sound29 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses