Q. 1744.5( 2 Votes )

A particular star is at a distance of about 8.1 × 1013 km from the Earth. Assuring that light travels at 3 × 108 m per second, find how long does light takes from that star to reach the Earth.

Answer :

Speed = or

Time Taken =


=


= 2.7x108 seconds.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Genius Quiz | Powers and ExponentsGenius Quiz | Powers and ExponentsGenius Quiz | Powers and Exponents27 mins
Quiz | Mastering Powers and ExponentsQuiz | Mastering Powers and ExponentsQuiz | Mastering Powers and Exponents45 mins
Smart Revision | Learning the Laws on ExponentsSmart Revision | Learning the Laws on ExponentsSmart Revision | Learning the Laws on Exponents50 mins
NCERT | Laws of ExponentsNCERT | Laws of ExponentsNCERT | Laws of Exponents25 mins
QUIZ | Exponents and PowerQUIZ | Exponents and PowerQUIZ | Exponents and Power35 mins
Quiz | Powers and ExponenntsQuiz | Powers and ExponenntsQuiz | Powers and Exponennts43 mins
Champ Quiz | Power and ExponentsChamp Quiz | Power and ExponentsChamp Quiz | Power and Exponents31 mins
Master Exponents & PowerMaster Exponents & PowerMaster Exponents & Power37 mins
Advance Problems in Exponents & PowerAdvance Problems in Exponents & PowerAdvance Problems in Exponents & Power40 mins
Smart Revision | Laws of ExponentsSmart Revision | Laws of ExponentsSmart Revision | Laws of Exponents46 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
RELATED QUESTIONS :

Find the value of n.

NCERT - Mathematics Exemplar

Solve:

NCERT - Mathematics Exemplar