Question

A new unit of length is chosen such that the speed of light in vacuum is unity. What is the distance between the Sun and the Earth in terms of the new unit, if light takes 8 minutes and 20 seconds to cover this distance ?
(1) 820 units
(2) 500 units
(3) 1500 units
(4) 2460 units

Answer 1

Solution:

Given that

The speed of light in vacuum is unity

And we want to find the distance between the Sun and the Earth

Use formula

Distance = speed × time

Speed is unity = 1 unit /sec

Time = 8 min and 20 sec = 8 × 60 + 20 sec = 500 sec

Plug the values we get

Distance between Sun and Earth = 1× 500 = 500 units

hope it will help u

Answer 2

==============ⓢⓦⓘⓖⓨ

$\huge\mathfrak\red{hello...frd\:swigy\:here}$

==============ⓢⓦⓘⓖⓨ

Distance between the Sun and the Earth

= Speed of light × Time taken by light to cover the distance

Given that in the new unit, speed of light = 1 unit

Time taken, t = 8 min 20 s = 500 s

Distance between the Sun and the Earth = 1 × 500 = 500 units

I hope, this will help you

=======================

$<marquee behaviour-move bigcolour-pink><h1>☺ThankYou✌</h1></marquee>$

·.¸¸.·♩♪♫ ⓢⓦⓘⓖⓨ ♫♪♩·.¸¸.·

___________♦♦⭐♦ ♦___________