Question 32
Refraction of LightThe displacement d produced in a glass block of thickness t and refractive index n when an object is viewed through it is
- A.t − n
- B.t(1 + 1/n)
- C.t(1 − 1/n)
- D.t(1/n − 1)
Show the answer and explanation
Answer: C (t(1 − 1/n))
Explanation
The apparent depth is t/n, so the object seems raised by d = t − t/n = t(1 − 1/n).