Q1 of 58 Page 331

How many surfaces bound a prism? How many refractions does a beam of white light suffer, when it is passed through a prism?

Five surfaces bound a prism. In a triangular prism, there are two triangular and three rectangular surfaces. A white light passing through a prism suffers two refractions.


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4

Name the defect which is caused when a person’s eye lens hardens.

 5

If a milky of cloudy membrane grow over the eye lens, then which defect is the person suffering from?

 2

Give the relationship between the wavelength of light and its angle of deviation, when it is passed through a prism.

 3

Name the colour for which angle of deviation while passing through the glass prism is

(i) Maximum


(ii)Minimum