Very short answer Questions (1 mark)
1. Is the eye lens convex or concave?
2. What is the far point of a normal eye?
3. What is the near point of a normal eye?
4. How is the amount of light entering the eye controlled?
5. Which defect of vision can be rectified by convex lens?
6. Which defect of vision can be rectified by concave lens?
7. Define power of accommodation of eye.
8. Which colour suffers maximum deviation on passing through a prism?
9. Give two examples for atmospheric refraction.
10. Give the essential condition for observing a rainbow.
1. Is the eye lens convex or concave?
2. What is the far point of a normal eye?
3. What is the near point of a normal eye?
4. How is the amount of light entering the eye controlled?
5. Which defect of vision can be rectified by convex lens?
6. Which defect of vision can be rectified by concave lens?
7. Define power of accommodation of eye.
8. Which colour suffers maximum deviation on passing through a prism?
9. Give two examples for atmospheric refraction.
10. Give the essential condition for observing a rainbow.
Short answer questions (2 marks)
1. What do you understand by the term “Persistence of vision”
2. What is Myopia?
3. State two causes of Myopia.
4. What is Hypermetropia?
5. State two possible causes of Hypermetropia.
6. A person is suffering from both Myopia & Hypermetropia. Suggest the type of spectacle to be used by him.
7. A person cannot see the object distinctly when placed at a distance less than 100 cm. What is the power of spectacle that should be used to see clearly the objects placed at 25 cm?
8. State the cause of dispersion of light.
9. What is a Rainbow? Give the principle involved in its formation.
10. Why does the sky appear dark instead of blue to an astronaut?
Short answer questions (3 marks)
1. What is Myopia? How is it corrected? Give any one cause of myopia.
2. What is Hypermetropia? How is it corrected? Give any one cause of Hypermetropia.
3. What is meant by dispersion of light? What is the colour sequence of a visible spectrum?
4. Give reason for the following: (a) Blue colour of the sky (b) Red colour of danger signals.
5. Give reason for the followingeturnToOldEditor=falseof clouds (b) Sun appears red at the time of sun set and sun rise.
6. Explain Tyndal Effect.
7. Explain with a neat ray diagram the reason for early sun rise and delayed sunset.
8. What is rainbow? Give the conditions for observing it. State the principle involved in the formation of rainbow.
9. Why do stars twinkle and hence why do planets do not twinkle?
Long Answer questions (5 marks)
1. Describe with a neat ray diagram how near sightedness can be corrected by using appropriate lens.
2. What is Hypermetropia? Write two causes for the development of this defect. Describe with a ray diagram how this defect of vision can be corrected by using spectacle.
3. (i) A ray of light breaks up into its components while passing through a glass prism. Draw ray diagram to show the path of rays.
(ii) Mark the least deviated colour in your figure .
(III) Explain the method to get white light from its components.
1. What do you understand by the term “Persistence of vision”
2. What is Myopia?
3. State two causes of Myopia.
4. What is Hypermetropia?
5. State two possible causes of Hypermetropia.
6. A person is suffering from both Myopia & Hypermetropia. Suggest the type of spectacle to be used by him.
7. A person cannot see the object distinctly when placed at a distance less than 100 cm. What is the power of spectacle that should be used to see clearly the objects placed at 25 cm?
8. State the cause of dispersion of light.
9. What is a Rainbow? Give the principle involved in its formation.
10. Why does the sky appear dark instead of blue to an astronaut?
Short answer questions (3 marks)
1. What is Myopia? How is it corrected? Give any one cause of myopia.
2. What is Hypermetropia? How is it corrected? Give any one cause of Hypermetropia.
3. What is meant by dispersion of light? What is the colour sequence of a visible spectrum?
4. Give reason for the following: (a) Blue colour of the sky (b) Red colour of danger signals.
5. Give reason for the followingeturnToOldEditor=falseof clouds (b) Sun appears red at the time of sun set and sun rise.
6. Explain Tyndal Effect.
7. Explain with a neat ray diagram the reason for early sun rise and delayed sunset.
8. What is rainbow? Give the conditions for observing it. State the principle involved in the formation of rainbow.
9. Why do stars twinkle and hence why do planets do not twinkle?
Long Answer questions (5 marks)
1. Describe with a neat ray diagram how near sightedness can be corrected by using appropriate lens.
2. What is Hypermetropia? Write two causes for the development of this defect. Describe with a ray diagram how this defect of vision can be corrected by using spectacle.
3. (i) A ray of light breaks up into its components while passing through a glass prism. Draw ray diagram to show the path of rays.
(ii) Mark the least deviated colour in your figure .
(III) Explain the method to get white light from its components.
I Think of your talents as the things you’re really good at. They’re like personality traits. For instance, you may be a very creative person, or a person who’s really good at attending to details or a person with a gift for communicating. Your talents are the base for any successful business venture, including a home-based business.
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A lot of useful information in those links, thanks. I feel that it might even be too much for me to “digest” in just one week.
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