ACT Science Practice Question #1310 (Medium (32)) | Test Citadel
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ACT Science Difficulty: Medium (32)

Digital ACT Science Practice Question #1310

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In a physics optics laboratory, a monochromatic light ray travels from a medium of refractive index $n_1 = 1.00$ into a flint glass prism of refractive index $n_2 = 1.50$ (air into glass) at an incident angle of $45^\circ$ relative to the surface normal. According to Snell's Law ($n_1 \sin(\theta_1) = n_2 \sin(\theta_2)$), as the light enters the second medium, how does its angle of refraction $\theta_2$ compare to the incident angle, and what occurs to the propagation speed of the light wave?
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Socratic AI Engine Step-by-Step Derivation
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⚡ 15-Second Desmos Speed Hack

Core rule: Higher index $n$ = slower speed + bends toward the normal. Lower index $n$ = faster speed + bends away from normal.

Masterclass Solution & Distractor Trap Analysis

According to Snell's Law $n_1 \sin(\theta_1) = n_2 \sin(\theta_2)$, when light passes into an optically denser medium ($n_2 > n_1$), $\sin(\theta_2) = (n_1/n_2)\sin(\theta_1) < \sin(\theta_1)$, so the angle $\theta_2$ decreases (bends towar...

Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...

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