Do you think only prisms cause dispersion of light?Give reason for your answer.
Important Questions on Refraction and Dispersion of Light
Draw ray diagrams when the object is at the following positions.
Convex mirror: a) At
b) At infinity
Draw ray diagrams when the object is at the following positions
Concave mirror: a) At
b) Between and
Helen Adams Keller was an American author, activist and lecturer. She was the first deaf and blind person to graduate from college. She became a world-famous speaker and author. Find out two more such inspiring personalities that in spite of visual impairment achieved great heights. What value do you learn from such people?
Close your eyes and take a walk around your house.
Write about your experience in a few words using the following questions:
a)How were you feeling when you were walking with your eyes closed?
b)Did you take help of other sense organs while taking the walk?
c) How was walking with your eyes closed similar/different to walking with your eyes open?
d)What have you learned regarding blind people's daily experience?
