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Explain in brief the perception of colour.
Human eye contains large number of rods and cones which are sensitive to light. Rods respond to the intensity of light and cones respond to the colour of the light. A person becomes blind due to the absence of cone cells in the eye.
Cone cells helps in perceiving the color. This is called perception of colour.
Mention against each of the following whether regular or diffused reflection will take place when a beam of light strikes. Justify your answer in each case.
Polished wooden table
Mention against each of the following whether regular or diffused reflection will take place when a beam of light strikes. Justify your answer in each case.
Chalk powder
Mention against each of the following whether regular or diffused reflection will take place when a beam of light strikes. Justify your answer in each case.
Cardboard surface
Mention against each of the following whether regular or diffused reflection will take place when a beam of light strikes. Justify your answer in each case.
Marble floor with water spread over it
Mention against each of the following whether regular or diffused reflection will take place when a beam of light strikes. Justify your answer in each case.
Mirror
Mention against each of the following whether regular or diffused reflection will take place when a beam of light strikes. Justify your answer in each case.
Piece of paper
State the laws of reflection.
Describe an activity to show that the incident ray, the reflected ray and the normal at the point of incident lie in the same plane.
A person 1 m in front of a plane mirror seems to be _____ m from his image.
If you touch your _____ ear with right hand in front of a plane mirror it will be seen in the mirror that your right ear is touched with _____.
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Mock Test Series
