Question

How many light years are there in one metre?

(a) 9.46×10^15ly

(b) 1.057×10^-16ly

(c) 1ly

(d) 1×10^-16ly

I have been asked this question by my college professor while I was bunking the class.

The query is from Laws Governing Gravity topic in chapter Laws of Motion of Engineering Physics I

Answer 1

The correct option is (b) 1.057×10^-16ly

For explanation I would say: 1 light year = 9.46×10^15m

1m = 1/(9.46×10^15)ly = 1.057×10^-16ly.