Concave and convex lenses

=Activity No # 1 - Name of Activity= Refraction of Light in Concave and Convex Lenses

Estimated Time
5 mins

Materials/ Resources needed
Concave and Convex Lenses Torch Light, Comb.

Website interactives/ links/ simulations
https://www.youtube.com/watch?v=JJHAJlKLEf0

Process (How to do the activity)
Take a Convex Lense and place it before a thick book which has a dark background.Keep a Comb in front the Lense.Now pass the light using the torch through the lense.Observe the path of the light rays. They converge at a point.

Now replace the convex lense with the concave lense and continue the procedure and obseve the path of the light rays. They appear as diverging from a point

Developmental Questions (What discussion questions)

 * 1) Name the types of Lenses
 * 2) What happens when light rays pass through the glass ?

Evaluation (Questions for assessment of the child)

 * 1) Which lense converges the light rays?
 * 2) Which lense diverges the light rays?

Question Corner
List out the uses of Convex and Concave Lenses in our daily life

To link back to the topic page Give the link of the page name from where activity was given Back