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Which colour of the light has the longes...

Which colour of the light has the longest wavelength?

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The red colour has the largest wavelength `(~~ 8 xx 10^(-7)m)` and violet colour has the shortest wavelenght `( ~~ 4 xx 10^(-7)m)`.
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PRADEEP-REFLECTION AND REFRACTION-Additional Question
  1. Take down Fig. on to your answer book and complete the path of the ray...

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  2. The range of wavelength of the visible light is

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  3. Which colour of the light has the longest wavelength?

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  4. Can light travel in vacuum ? If yes, with what speed ?

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  5. What is the speed of light in air ?

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  6. What is a ray light ?

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  7. Name the best reflector of light.

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  8. On what factors does the focal length of a spherical mirror depend ?

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  9. Do the laws of reflection change, when we use a spherical mirror inste...

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  10. Complete the following ray diagrams. State the size and nature of imag...

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  11. Can an object be virtual ?

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  12. Can a real image be taken on a screen ?

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  13. Do lights rays actually pass through a real image ?

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  14. Do lights rays actually pass through a virtual image ?

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  15. How do you draw normal to a spherical mirror at a particular point?

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  16. Which of the mirrors is diverging: concave or convex?

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  17. Which of the mirrors is converging: concave or convex?

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  18. What is the relation between focal length and radius of curvature of a...

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  19. (a) The magnification of a concave mirror is - 1. What is the position...

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  20. What is the ratio of object distance to image distance in case of a co...

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