Physics
Which of the following figures will depict deviation of ray of light A through 180°
Related Questions
When a ray of light travels from substance A to substance B and reaches their boundary, it suffers total internal reflection. Out of the following possibilities, which one is correct?
Angle i Substance B (a) i < C Optical density of A is less than B (b) i = C Optical density of A is more than B (c) i > C Optical density of A is less than B (d) i > C Optical density of A is more than B - Option (a)
- Option (b)
- Option (c)
- Option (d)
An equilateral prism can be used to deviate a ray of light through:
- 30°
- 60°
- 75°
- 90°
The diagram below shows a light source P embedded in a rectangular glass block ABCD of critical angle 42°. The ray PQ would:
![The diagram below shows a light source P embedded in a rectangular glass block ABCD of critical angle 42°. Complete the path of the ray PQ till it emerges out of the block. [Write necessary angles.] ICSE 2019 Physics Solved Question Paper.](https://cdn1.knowledgeboat.com/img/abp10/5/icse-2019-physics-question-paper-solved-2e-1200x730.png)
- pass undeviated
- suffer refraction
- suffer reflection
- suffer total internal reflection
In the process of total internal reflection, …………… of energy (or intensity) of light is reflected back.
- 70%
- 80%
- 100%
- 50%