The refractive indices of three media are given below :
A ray of light is travelling from $A$ to $B$ and another ray is travelling from $B$ to $C$.
(a) In which of the two cases the refracted ray bends towards the normal?
(b) In which case does the speed of light increase in the second medium?
Give reasons for your answer.
| Medium | Refractive Index |
| A | 1.6 |
| B | 1.8 |
| C | 1.5 |
(a) In which of the two cases the refracted ray bends towards the normal?
(b) In which case does the speed of light increase in the second medium?
Give reasons for your answer.
[CBSE S.P - 2024]
Download our app for free and get started
a) When light travels from an optically rarer medium to an optically denser medium it moves towards the normal. Since $n_B>n_A$ hence the light ray will bend towards the normal on passing from medium $A$ to $B$.
b) The speed of the light will increase when the light travels from B to C, Since $n c<n_B$ and $v =( c / n )$, the speed of light ray will increase in the second medium.
b) The speed of the light will increase when the light travels from B to C, Since $n c<n_B$ and $v =( c / n )$, the speed of light ray will increase in the second medium.
Download our appand get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
Similar Questions
- 1View SolutionWhat type of lens is shown in the diagram on the right? What will happen to the parallel rays of light? Show by completing the ray diagram.
- 2View SolutionWhy does a beam of light when it enters glass at an angle? Why does it not bend if it inters the glass at right angles?
- 3View SolutionA wall reflects light and a mirror also reflects light. What difference is there in the way they reflect light?
- 4View SolutionDraw a labelled ray diagram to show the formation of image of an object by a convex mirror. Mark clearly the pole, focus and centre of curvature on the diagram.
- 5View SolutionState and explain the laws of refraction of light with the help of a labelled diagram.
- 6View SolutionDraw ray diagrams showing the image formation by a concave lens when an object is placed:Between focus and twice the focal length of the lens.
- 7View SolutionDraw ray diagrams showing the image formation by a concave mirror when an object is placed:
At centre of curvature of the mirror. - 8View SolutionTo construct ray diagram we use two light rays which are so chosen that it is easy to know their directions after reflection from the mirror. List these two rays and state the path of these rays after reflection. Use these rays to locate the image of an object placed between centres of curvature and focus of a concave mirror.
- 9View SolutionName the type of mirror used by dentists. How does it help?
- 10View Solution
Explain how to read the following message which was found on some blotting paper:
