Refraction of Light Through a Glass Prism - 88Guru. Introduction Have you ever questioned why straw that has been dipped in water appears warped? When the water is added to the glass, the straw appears to bend, but when you remove it, you can see that it hasn’t actually bent at all. Refraction is to blame for this; rather than the straw itself, it bends the light around it. Likewise occurs when a pencil is inserted into a glass of only partially full water. If you look at the pencil, you can see that it looks normal above the water but twisted and a little bigger below.
There are numerous such instances of refraction in daily life that will be covered in this chapter. Refractive index of light The refractive index of any material is given as the ratio of the speed of light in the vacuum divided (c) by the speed of light in a medium (v), and is presented with a symbol, n, such that, $$n=\frac{c}{v}$$ We can infer from this relationship that optical density and light speed both affect the refractive index. Prism Refractive index of a prism 1. Secondary 1 Science Tuition | Best Online Tuition for Science. No Men Are Foreign Class 9th Summary and Question Answers | 88Guru. Introduction No Men are Foreign is a poem by “English Poet,” “James Harold Kirkup,” with a strong viewpoint.
The poet wants to convince people that all people are the same and share a common home- the Earth. People shouldn’t be discriminated against because they all breathe the same air, receive the same amount of sunlight, and go through the same processes of birth and death. No Men are Foreign is the poem’s main concept, which is reflected in the title. No Men Are Foreign Poem Summary “Remember no men are strange, no countries foreign”, is the opening and closing phrase of the poem- “No Men are Foreign.”
The poet continues further by stating that our physical and mental features are all the same. For more details watch the video of the English Tuition. Theme of the Poem No Men Are Foreign The central idea of no men are foreign revolves around the brotherhood of all humankind. Conclusion TextBook Questions 1. 2. Ans: The 5 words that depict all men are same are: 3. 5. 1. 2. 3.
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