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Question 18M.1.HL.TZ1.13

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.1.HL.TZ1.13
Level HL Paper 1 Time zone TZ1
Command term Question number 13 Adapted from N/A
13.
[Maximum mark: 1]
18M.1.HL.TZ1.13

A ray of light passes from the air into a long glass plate of refractive index n at an angle θ to the edge of the plate.

                               M18/4/PHYSI/HPM/ENG/TZ1/13_01

The ray is incident on the internal surface of the glass plate and the refracted ray travels along the external surface of the plate.

What change to n and what change to θ will cause the ray to travel entirely within the plate after incidence?

M18/4/PHYSI/HPM/ENG/TZ1/13_02

[1]

Markscheme

A

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