Physics 10 Chapter 3 - Geometrical Optics - 10

Physics 10 Chapter 3 - Geometrical Optics - 10

1. What is the speed of light in glass?

a) 3.2 x 10⁸ ms^-1
b) 2.3 x 10⁸ ms^-1
c) 3.0 x 10⁸ ms^-1
d) 2.0 x 10⁸ ms^-1

2. To describe the change in the speed of light, which of the following terms we use?

a) Index of reflection
b) Mirror index
c) Reflective index
d) Index of refraction

3. To describe the change in the speed of light, which of the following terms we use?

a) Reflective index
b) Index of reflection
c) Mirror index
d) Refractive index

4. What is the refractive index of diamond?

a) 2.12
b) 10.1
c) 2.42
d) 31.0

5. What is the ratio of speed of light in vacuum to the speed of light in medium called?

a) Reflective index
b) Refractive index
c) Mirror index
d) Index of reflection

6. What is the refractive index of cubic zirconia?

a) 2.21
b) 31.0
c) 2.12
d) 10.1

7. What is the formula of refractive index?

a) Speed of light in vacuum x Speed of light in medium
b) Speed of light in medium + Speed of light in vacuum
c) Speed of light in medium / Speed of light in vacuum
d) Speed of light in vacuum / Speed of light in medium

8. What is the refractive index of flint glass?

a) 31.0
b) 2.12
c) 10.1
d) 1.66

9. What is the formula of refractive index?

a) Formula: n = c x v
b) Formula: n = v / c
c) Formula: n = c + v
d) Formula: n = c / v

10. What is the refractive index of crown glass?

a) 10.1
b) 2.12
c) 31.0
d) 1.52

11. What is the SI unit of refractive index?

a) Pascal
b) Newton
c) No unit
d) Tory

12. What is the refractive index of ethyl alcohol?

a) 10.1
b) 1.36
c) 2.12
d) 31.0

13. What is ‘c’ in the formula “n = c / v”?

a) Refractive index
b) Speed of light in water
c) Speed of light in vacuum
d) Speed of light in medium

14. What is ‘v’ in the formula “n = c / v”?

a) Refractive index
b) Speed of light in medium
c) Speed of light in water
d) Speed of light in vacuum

15. What is the refractive index of ice?

a) 10.1
b) 31.0
c) 1.31
d) 2.12

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