Physics 5054 · O Level · Refraction of light

Refraction of light — practice question

Light travels from air into a glass block with refractive index $1.5$, as illustrated. What is the angle of refraction in the glass and what is the critical angle?

  • Aangle of refraction $34^{\circ}$, critical angle $42^{\circ}$
  • Bangle of refraction $34^{\circ}$, critical angle $60^{\circ}$
  • Cangle of refraction $38^{\circ}$, critical angle $42^{\circ}$
  • Dangle of refraction $38^{\circ}$, critical angle $60^{\circ}$

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