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Optics Book Back Questions & Answers, Exercises, Solutions, Tests, Quizzes, Videos and Podcasts for Class 10 | Unit 2 | Physics | Science | Samacheer Kalvi – English Medium | TNPSC

New Book Back Questions & Answers: https://www.thelearning.app/samacheer-kalvi-english-medium/class-10/science-5/optics/exercises

Podcasts: https://www.thelearning.app/samacheer-kalvi-english-medium/class-10/science-5/optics/videos

Tests & Quizzes: https://www.thelearning.app/samacheer-kalvi-english-medium/class-10/science-5/optics/tests

Flash Cards: https://www.thelearning.app/samacheer-kalvi-english-medium/class-10/science-5/optics/flashcards

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00:00 Introduction
00:10 Choose the correct answer
04:29 Fill in the blanks
05:19 Match the following
05:53 True or false
06:48 Assertion and reason

Questions answered in this video –

1. The refractive index of four substances A, B, C and D are 1.31, 1.43, 1.33, 2.4 respectively. The speed of light is maximum in

2. Where should an object be placed so that a real and inverted image of same size is obtained by a convex lens

3. A small bulb is placed at the principal focus of a convex lens. When the bulb is switched on, the lens will produce

4. Magnification of a convex lens is

5. A convex lens forms a real, diminished point sized image at focus. Then the position of the object is at

6. Power of a lens is -4D, then its focal length is

7. In a myopic eye, the image of the object is formed

8. The eye defect presbyopia can be corrected by

9. Which of the following lens would you prefer to use while reading small letters found in a dictionary?

10. If VB, VG, VR be the velocity of blue, green and red light respectively in a glass prism, then which of the following statement gives the correct relation?

11. The path of the light is called as_________

12. The refractive index of a transparent medium is always greater than__________

13. If the energy of incident beam and the scattered beam are same, then the scattering of light is called as _________scattering.

14. According to Rayleigh’s scattering law, the amount of scattering of light is inversely proportional to the fourth power of its_________

15. Amount of light entering into the eye is controlled by___________

16. Retina

17. Pupil

18. Ciliary muscles

19. Myopia

20. Hypermetropia

21. Velocity of light is greater in denser medium
than in rarer medium

22. The power of lens depends on the focal
length of the lens

23. Increase in the converging power of eye
lens cause Hypermetropia

24. The convex lens always gives small virtual
image.

25. (A): If the refractive index of the medium is high (denser medium) the velocity of the light in that medium will be small. (R): Refractive index of the medium is inversely proportional to the velocity of the light

26. (A): Myopia is due to the increase in the converging power of eye lens.. (R): Myopia can be corrected with the help of concave lens.

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