Optics Four and Seven Marks Questions

10th Standard

    Reg.No. :


Time : 01:00:00 Hrs
Total Marks : 55
    5 x 4 = 20
  1. State the laws of refraction.

  2. Explain Raman Scattering.

  3. Write the sign convention for lenses.

  4. Explain the types of Telescope.

  5. Explain the refraction of light through a glass prism.

  6. 5 x 7 = 35
  7. Light rays travel from vacuum into a glass whose refractive index is 1.5. If the angle of incidence is 30°, calculate the angle of refraction inside the glass.

  8. A beam of light passing through a diverging lens of focal length 0.3m appear to be focused at a distance 0.2m behind the lens. Find the position of the object.

  9. A person with myopia can see objects placed at a distance of 4m. If he wants to see objects at a distance of 20m, what should be the focal length and power of the concave lens he must wear?

  10. For a person with hypermeteropia, the near point has moved to 1.5m. Calculate the focal length of the correction lens in order to make his eyes normal.

  11. Light in air enters a diamond at 45°. What is the angle of refraction? G.T μdia = 2.42.


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