Practice portal › Ray Optics and Optical Instruments › Refraction and Total Internal Reflection
Asked in GSEB Board March 2023 · Snell's law, slabs and apparent depth
Given: 360° of apparent rotation in 24 h=86400 s.
Idea: the Sun's apparent shift is the earth's rotation, so time and angle are in direct proportion.
One degree: (86400)/(360)=240 s.
Two degrees take twice as long: 2×240.
So the Sun shifts by 2° in 480 s, that is 8 minutes.
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