Project:
Using a laser and soap water, study the refraction of light under the guidance of your teacher.

Make a herbarium under the guidance of your teacher.

Derive the laws of refraction of light using Huygen's principle.

Questions based on paragraph : Study the following incident : Swara and yash were looking in a water filled vessel . They could see their images clearly in the still water . At that instant , yash threw a stone in the water . Now their images were blurred . swara could not understand the reason for the blurring of the images . : explain the reason for blurring of the images to swara by answering the following questions : Is there a relation between the reflection of light and the blurring of the images ?

The ratio of velocities of light in glass that in waters is ( refractive index of glass = 1.5 and refractive index of water = 1. 33)

Explain the working of an astronomical telescope using refraction of light.

If the difference in velocities of light in glass and water is 2.7 xx 10^7 m/s ,find the velocity of light in air. (Refractive index of glass = 1.5, Refractive index of water = 1.333)

If the refractive indices of glass and water with respect to air is 3/2 and 4/3 respectively. Calculate the velocity of light in glass and water.From these results calculate the refractive index of glass with respect to water. Given velocity of light in air is 3 xx 10^8m//s .

Use your brain power! Why does water trickle off lotus leaves?

Questions based on paragraph : Study the following incident : Swara and yash were looking in a water filled vessel . They could see their images clearly in the still water . At that instant , yash threw a stone in the water . Now their images were blurred . swara could not understand the reason for the blurring of the images . : explain the reason for blurring of the images to swara by answering the following questions : Which types of reflection of light can you notice from this ?

An 'app' may be available on cell-phones to measure the loudness of sound in decibel. With the help of your teacher, use the app to measure the sound level of a sound from a loudspeaker at some public place. Measure the sound level at different distances from the loudspeaker. Do you observe some relation between the distance from the loudspeaker and sound level?