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Carbon disulfide (n = 1.63) is poured into a container made of crown glass (n = 1.52). What is the critical angle for internal reflection of a ray in the liquid when it is incident on the liquid-to-glass surface?​
  • a)
    4.0 degrees
  • b)
    68.8 degrees
  • c)
    89.0 degrees
  • d)
    21.2 degrees
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Carbon disulfide (n = 1.63) is poured into a container made of crown g...
Refractive index of glass with respect to liquid:
n = 1.52/1.63 = 0.9325
 
thus critical angle, i = sin^-1(n) = 68.8 degrees
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Community Answer
Carbon disulfide (n = 1.63) is poured into a container made of crown g...
Given data:
Refractive index of carbon disulfide, n1 = 1.63
Refractive index of crown glass, n2 = 1.52
Critical angle = ?

Formula used:
Critical angle, θc = sin⁻¹(n2/n1)

Calculation:
Substituting the given values in the formula, we get
θc = sin⁻¹(1.52/1.63)
θc = sin⁻¹(0.93251533742)
θc = 68.8 degrees

Therefore, the critical angle for internal reflection of a ray in the liquid when it is incident on the liquid-to-glass surface is 68.8 degrees. Hence, option (b) is the correct answer.
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Carbon disulfide (n = 1.63) is poured into a container made of crown glass (n = 1.52). What is the critical angle for internal reflection of a ray in the liquid when it is incident on the liquid-to-glass surface?​a)4.0 degreesb)68.8 degreesc)89.0 degreesd)21.2 degreesCorrect answer is option 'B'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Carbon disulfide (n = 1.63) is poured into a container made of crown glass (n = 1.52). What is the critical angle for internal reflection of a ray in the liquid when it is incident on the liquid-to-glass surface?​a)4.0 degreesb)68.8 degreesc)89.0 degreesd)21.2 degreesCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Carbon disulfide (n = 1.63) is poured into a container made of crown glass (n = 1.52). What is the critical angle for internal reflection of a ray in the liquid when it is incident on the liquid-to-glass surface?​a)4.0 degreesb)68.8 degreesc)89.0 degreesd)21.2 degreesCorrect answer is option 'B'. Can you explain this answer?.
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