State the laws of refraction.

Explain Raman Scattering.

Write the sign convention for lenses.

Explain the types of Telescope.

Explain the refraction of light through a glass prism.

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.

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.

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?

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

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