The sun is 1.5 × 108 km from Earth. The index of refraction for water is 1.349. How much longer would it take light from the sun

Question

3 years ago

5

to reach Earth if the space between them were filled with water rather than a vacuum?

1 answer:

tankabanditka [31] · Answer 1 · 2022-05-24T15:48:40+03:00

Answer:

175s

Explanation:

time it takes sunlight to reach the earth in vacuum

C=light speed=299792458m/s

X=1.5x10^8km=1.5x10^11m

c=X/t

T1=X/c

T1=1.5X10^11/299792458=500.34s

time it takes sunlight to reach the earth in water:

First we calculate the speed of light in water taking into account the refractive index

Cw=299792458m/s/1.349=222233104.5m/s

T2=1.5x10^11/222233104.5m/s=675s

additional time it would take for the light to reach the earth

ΔT=T2-T1=675-500=175s