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Light — Physics STD 10 — Question

ICSE BoardEnglish MediumSTD 10PhysicsLight1 Mark
MCQ
Assertion (A): Total internal reflection occurs only when a ray of light passes from a denser medium to a rarer medium. Reason (A): Critical angle is the angle of incidence in a denser medium for which the angle of refraction in rarer medium is $90^{\circ}$
  • A
    Both A and R are true and R is the correct explanation of A.
  • ✓
    Both A and R are true but R is not the correct explanation of A
  • C
    Assertion is false but reason is true
  • D
    Assertion is true but reason is false.
✓

Answer

Correct option: B.
Both A and R are true but R is not the correct explanation of A
B

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