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Gurmit wanted to perform the Activity of 'Throwing light on frinds eye' using a laser torch. Her teacher advised her not to do so. Can you explain the basis of the teachers advise?
LASER light is harmful for eyes. If our eyes are exposed to this light, it can cause permanent damage to our eyes. Hence, the teacher has asked Gurmit not to perform the activity with LASER light.
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 _____.
Fill in the blanks:
The size of the pupil becomes _________ when you see in dim light.
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