Neco Model Questions Vol1 2025 Physics Question 16

Practice objective / multiple choice question 16 from the 2025 Neco Model Questions Vol1 Physics examination.

Neco Model Questions Vol1 2025 Physics Objective / Multiple Choice Medium Difficulty
Question 16 NECO_MODEL_QUESTIONS_VOL1 • 2025 • PHYSICS • objective

A glass prism has an apex angle of \(60^{\circ}\). When a ray of monochromatic light of wavelength \(600\ \text{nm}\) passes through the prism, the angle of minimum deviation is measured to be \(40^{\circ}\). (i) Determine the refractive index \(n\) of the glass. (ii) Using this value of \(n\), calculate the critical angle for total internal reflection at the glass-air interface.

Answer Options

A. n = 1.48, \theta_c = 42.0^{\circ}
B. n = 1.60, \theta_c = 38.7^{\circ}
Correct Answer C. n = 1.53, \theta_c = 40.8^{\circ}
D. n = 1.53, \theta_c = 45.0^{\circ}
Correct Answer
C
Correct Option:
n = 1.53, \theta_c = 40.8^{\circ}

About This Question

This is Neco Model Questions Vol1 2025 Physics Question 16. It is one of the objective questions from the 2025 Neco Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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