It takes nd/ (lambda*f) time or a short pulse of light to travel from one end of the glass to the other.
If we talk about free space, that is, vacuum, light travels at a speed of 3x10^8 m/s, yet inside a glass light travels at a speed of v= c/n, where v is the velocity of the light and n is the refractive index. Now,
v=d/t,
so t= d/v
t= d/ (c/n)= n*d/c
c= lambda*f
t= nd/(lambda*f)
here, d is the thickness of the block, t is the time required and c refers to speed of light.
To learn more about refractive index, click
brainly.com/question/13088981
#SPJ4
Answer: Sea level is the base level for measuring elevation and depth on Earth. Because the ocean is one continuous body of water, its surface tends to seek the same level throughout the world. ... Sea level is measured in relation to the adjacent land. Just like the ocean, the elevation of land may rise and fall over time.
Explanation:
D. The study of a society and its natural environment, would be the closest definition
1. The roads provided quick and reliable routes for the military who could get to trouble spots quickly and thus maintain law and order.
2. The roads made travel easy for civilians thus enhancing economic activities.
3. The roads made possible fairly fast communication to virtually every part of the Inca empire.
The Inca road system of Peru was the most extensive, traversing the Andes mountains and reaching heights of over 5000 m above sea level and covered approximately 22, 530 km.
