In total internal reflection, the angle of incidence (i) must be greater than critical angle C ∵2μ12sinisinii=2 and μ2=23≥23sin90∘≥43≥sin−1(43)
The speed of light in media M_1 and M_2 is 1.5 × 10^8 ~m / s and 2.0 × 10^8 ~m / s respectively. A ray of light enters from medium M_1 to M_2 at an…
NEET UG 2010 — Physics Optics
2010mcqeasy
The speed of light in media M1 and M2 is 1.5×108 m/s and 2.0×108 m/s respectively. A ray of light enters from medium M1 to M2 at an incidence angle i. If the ray suffers total internal reflection, the value of i is
Official previous-year question
Held on 30 Apr 2010 · Verified 9 Jul 2026.
Options
- A
equal to sin−1(32)
- B
equal to or less than sin−1(53)
- C
equal to or greater than sin−1(43)
- D
less than sin−1(32)
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