MCQ- 7 ICSE Physics class 10 ch-2 Light

Class 10 - Light Quiz (Critical Angle and Refractive Index)

1. What is the mathematical relationship between the critical angle and refractive index?

μ = sin C
μ = 1/sin C
μ = cos C
μ = tan C

2. If the critical angle increases, what happens to the refractive index?

It increases
It decreases
It remains constant
It becomes zero

3. Which formula is derived from μ = 1/sin C?

C = tan(1/μ)
μ = sin(1/C)
C = sin^-1(1/μ)
C = cos(1/μ)

4. Which factor can increase the critical angle of a medium?

Increasing the wavelength of light
Increasing the density of the medium
Using a narrow beam of light
Reducing the light intensity

5. Which of the following statements is correct about critical angle and refractive index?

Higher refractive index means lower critical angle
Higher critical angle means higher refractive index
Critical angle and refractive index are directly proportional
There is no relation between them

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