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1. Write the characteristics of refractive index.
2. List 3 phenomenon of light responsible for formation of rainbow.
3. The angle between an incident ray and the mirror is theta, the total angle turned by the ray of light is 80 degree. What is the value of theta?
4. How is the refractive index of an optical medium related to the speed of light in that medium?
5. Name a point inside a lens through which the light passes undeviated.
6. An object placed on a metre scale at 8 cm mark was focuses on a white screen placed at 92 cm mark, using a converging lens placed on the scale at 50 cm mark.
(i) Find the focal length of the converging lens.
(ii) Find the position of the image formed if the object is shifted towards the lens at a position of 29.0 cm.
(iii) State the nature of the image formed if the object is further shifted towards the lens.

P.S. tysm :)


1.the ratio of speed of light in vaccum to that of speed of light in medium
2.the light should pass from the rain drop and causes dis persion of light.
3.the valur of theta is 180-80=100
4 n=c\v 
5 pupil

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Dder is only 1 charracteristic of refrctive index?
6 iii) nature of the image, if it is further shifted is, virtual and erect, enlarged image.
for other answers, hope the previous answer is helpful for many wuestions, i.e., the other user answer.

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