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AI Gen: Laws of Motion question bank (Physics)

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Q1.

Refer to the Case Study 'Case Study: Optical Fibers and Total Internal Reflection in Medical Endoscopy' to answer:

What essential conditions must be satisfied for total internal reflection to occur within the optical fiber?

(A)

Light must propagate from an optically denser medium to a rarer medium, and the angle of incidence must exceed the critical angle

(B)

Light must propagate from a rarer medium to a denser medium at an angle less than the critical angle

(C)

Both core and cladding must possess identical refractive indices

(D)

Light must be polarized parallel to the fiber axis

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Q2.

Refer to the Case Study 'Case Study: Optical Fibers and Total Internal Reflection in Medical Endoscopy' to answer:

Calculate the critical angle $\theta_c$ for the optical fiber described in the passage ($n_1 = 1.52, n_2 = 1.48$).

(A)

$\theta_c = \sin^{-1}\left(\frac{1.48}{1.52}\right) \approx 76.8^\circ$

(B)

$\theta_c = \sin^{-1}\left(\frac{1.52}{1.48}\right)$ (Undefined)

(C)

$\theta_c = \cos^{-1}(1.48 \times 1.52) \approx 45^\circ$

(D)

$\theta_c = \tan^{-1}\left(\frac{1.48}{1.52}\right) \approx 44.2^\circ$

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