Explain the following terms:
plane mirror
Draw diagram/diagrams to show them.

Explain the following terms: incident ray Draw diagram/diagrams to show them.

Explain the following terms: reflected ray Draw diagram/diagrams to show them.

Explain the following terms: angle of reflection. Draw diagram/diagrams to show them.

Explain the following terms : Angle of reflection Draw diagram/diagrams to show them.

Explain the following terms: angle of incidence and Draw diagram/diagrams to show them.

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Draw diagrams to show the formation of beats?

It is desired to obtain an erect image of an object, using concave mirror of focal length of 12 cm. (i) What should be the range of distance of an object placed in front of mirror ? (ii) Will the image be smaller or large than the object ? Draw a ray diagram to show the formation of image in this case. (iii) Where will the image of this object be, if it is placed 24 cm in front of the mirror ? Draw a ray diagram for this situation also to justify your answer. Show the positions of the pole, the principal focus and the centre of curvature in the above ray diagrams.

Define the terms focus and focal length of a concave mirror. Draw diagram to illustrate your answer.