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Defects of Vision, Class 10 Science NCERT Solutions

1. There will be total 20 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying

1. We use __________ lens to correct Hypermetropia
 
 
 
 

Question 1 of 20

2. For the myopic eye, the defect is cured by
 
 
 
 

Question 2 of 20

3. The near point of a human eye is at a distance of
 
 
 
 

Question 3 of 20

4. A person suffering from myopia can see upto 3m.The power of lens required to rectify is
 
 
 
 

Question 4 of 20

5. One of the reasons for myopia is
 
 
 
 

Question 5 of 20

6. A person suffering from myopia cannot see clearly beyond 1 m. What should be the focal length of the concave lens that will correct his vision?
 
 
 
 

Question 6 of 20

7. Cataract can be cured by
 
 
 
 

Question 7 of 20

8. A person is suffering from both defects of vision, myopia and hypermetropia. He should use:
 
 
 
 

Question 8 of 20

9. Image is formed for the shortsighted person:
 
 
 
 

Question 9 of 20

10. A defective eye cannot see close objects clearly. This is because their images are formed
 
 
 
 

Question 10 of 20

11. If the image was formed in front of the retina rather than behind the retina, then the person would need to correct the vision problem by using a:
 
 
 
 

Question 11 of 20

12. An optician used concave lens to correct the defect of eye so that the customer can see clearly. Which defect of vision could it be?
 
 
 
 

Question 12 of 20

13. A person with defective eyesight is unable to see objects clearly nearer than 1.5 m. He wants to read a book placed at a distance of 30 cm from his eyes. The type of a required lens and its focal length is
 
 
 
 

Question 13 of 20

14. A person has near point of his vision shifted to 50 cm. What lens must be used to see an object placed at 25 cm from the eye? What is the power of the lens?
 
 
 
 

Question 14 of 20

15. Isha’s eye balls are too short due to which she cannot see
 
 
 
 

Question 15 of 20

16. Among the following statements, the statement that does not hold true for shortsightedness is
 
 
 
 

Question 16 of 20

17. A boy is wearing glasses and says that he cannot see the object kept at a distance without glasses. He is suffering from
 
 
 
 

Question 17 of 20

18. The cause of Presbyopia is
 
 
 
 

Question 18 of 20

19. The far point of a myopic person is 80 cm in front of the eye. What is the nature and power of the lens required to correct the problem?
 
 
 
 

Question 19 of 20

20. Presbyopia for human eye can be removed by using:
 
 
 
 

Question 20 of 20

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