Optics

Q2. The frequency of light changes when it refracts into another medium.

Q3. A convex lens converges parallel light rays.

Q4. The frequency of light remains unchanged when it passes from one medium to another.

Q5. A concave lens always forms a virtual, erect and diminished image.

Q6. The unit of lens power is dioptre.

Q7. The power of a convex lens is generally negative.

Q8. The sky appears red because blue light is scattered less.

Q9. A convex lens is a diverging lens.

Q10. Myopia can be corrected using a convex lens.