Question
A polished surface reflects a parallel beam of light in
one direction
two directions
three directions
four directions
Solution
A.
one direction
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A polished surface reflects a parallel beam of light in
one direction
two directions
three directions
four directions
A.
one direction
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.
Night birds have ________ cones than rods in their eyes.
Angle of incidence is equal to the angle of reflection
Image formed by a plane mirror is
Describe the construction of a kaleidoscope.
Draw a labelled sketch of the human eye.
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?
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