Physics
The diagram given below shows light travelling from air into glass. Four angles A, B, C and D are shown. Which of the following formulae is used to calculate the refractive index μ of the glass? 1. μ = 2. μ = 3. μ = 4. μ =
Related Questions
When a ray of light from air enters a denser medium, it:
- bends away from the normal
- bends towards the normal
- goes undeviated
- is reflected back
A light ray does not bend at the boundary in passing from one medium to the other medium if the angle of incidence is:
- 0°
- 45°
- 60°
- 90°
The incorrect statement among the following is:
- When a ray of light gets refracted from a denser to a rarer medium, the speed of light decreases.
- The frequency of light does not change on refraction.
- The speed of light V in a medium is related to its wavelength λ and frequency f as V = fλ
- The incident ray, the refracted ray and the normal at the point of incidence all lie in one plane.
In refraction of light, the relation between incident angle i and refracted angle r is:
- i > r
- r > i
- i = r
- there is no fixed relation.