Question

what are the sign conversation rules applied in mirror
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Answer 1

Explanation:

the conversation rules applied in mirror are-

1. object is always placed to the left of mirror.

2. All distances are measured from the pole of the mirror.

3. distance measured in the direction of the incident Ray are positive and the distances measured in the direction opposite to that of the incident Ray are negative.

Answer 2

Correct Question:

What are the sign convention rules applied in mirror?

Answer:

i) All the distances are measured from pole.

ii) The distance measured in the direction of incident ray are taken positive while in the opposite direction are taken as negative.

iii) The height of image or object above the principal axis are taken positive while the height of object or image below the axis is taken as negative.

Additional Information:

Mirror:

• Mirror is a polished surface of glass from which all the light is reflected.

• If the reflecting surface is plane, then mirror is called plane mirror.

• If the reflecting surface is spherical, then mirror is called spherical mirror.

Uses of Mirrors:

i) Plane Mirror-

• As looking mirrors

ii) Concave Mirror-

• As shaving mirrors
• Used by doctors
• Shades of table lamp
• For search lights

iii) Convex Mirror-

• As back view mirrors in vehicles
• In street lamps