Light-Refraction

CLASS-X

LIGHT

ASSIGNMENT-2

Q1. Define Snell’s Law of refraction.

Q2. Refractive Indices of media A, B, C, D are given below:

         Media                   Refractive Index

           A                            1.33

           B                            1.44

           C                            1.52

           D                            1.65

    In which of these four media is the speed of light

i)                   maximum

ii)                 minimum

Q3. Refractive index of a medium with respect to air is always greater than 1. Explain why?

Q4. The velocity of light in air is 3 x 10 m/s and velocity of light in glass slab is 2 x 10 m/s. Find refractive index of glass.

Q5. The refractive index of diamond is 2.42. What is the meaning of this statement?

Q6. No refraction of light occurs when light falls perpendicularly to the boundary separating two media of different refractive index. Explain. Why?

Q7.State 3 factors on which refractive index of a medium depends.

Q8. If refractive indices of water and alcohol are 1.33 and 1.36 respectively.

      Which is optically denser medium?

Q9. A ray of light falls obliquely on a glass slab. The perpendicular distance between the emergent ray of light and the original path of the incident ray is 2cm. What is the lateral shift of the ray of light?

Q10. State 3 factors on which lateral shift of the emergent ray depends.