State True or False:

The image formed by a plane is real.

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?